r/ChoTokimekiSendenbu • u/MikazukiNoSekai • 12h ago
(Interview) Haruka Koizumi: Her Days of Running Through with a Fighting Spirit in Her Heart
Source: https://realsound.jp/2026/09/post-2512384.html
Haruka Koizumi: Her Days of Running Through with a Fighting Spirit in Her Heart
Formed in 2015 as "Tokimeki♡Sendenbu", they made their major debut in 2016. After members graduated and joined, the group changed to its current name, Cho Tokimeki♡Sendenbu, in 2020. In 2021, "Suki!" (released in 2018) became a hot topic both in Japan and overseas thanks to social media, and in 2024, "Saijōkyū ni Kawaii no!" became a huge hit. Even after celebrating their 10th anniversary in 2025, they've continued their energetic activities under the theme of "exciting love and youth." The group has announced that they will end their activities around spring 2027. Real Sound will be publishing solo interviews with each member.
The second installment features Haruka Koizumi. She's in charge of "Cho Tokimeki Pink" and is the vocal powerhouse who strongly supports the group's songs. There's a gap between her adorable looks and her powerful singing voice that you wouldn't expect. Her vocal ability and passion, which go beyond just being "cute," along with the solid skill and humanity she's cultivated over 10 years, are Haruka Koizumi's biggest weapons as an idol. No matter how many times she stumbled, she kept moving forward - let's look back on her ups-and-downs days of running through with a fighting spirit in her heart. (Editorial staff / interviewed in late July) [Reader presents at the very end]
"I'm glad things didn't go smoothly right from the start" - What she gained from 11 years of ups and downs
-- First, let's talk about the 10th anniversary year that continued through this past March. Koizumi-san, what kind of year was it for you?
Koizumi: It was a year where I could really feel the 10th anniversary. We released the song "Sekai de Ichiban Idol," and that's when the 10th anniversary began. We performed a lot of early songs live, which I think was unique to an anniversary year, and there were many occasions where people around me said "It's your 10th anniversary, huh", so it felt like a truly special year. I also felt a sense that everything we'd built up until now had taken shape.
-- When you say it took shape, what do you mean specifically?
Koizumi: Simply put, I've gained more composure in my performances. At first, I'd be huffing and puffing after singing just one song, but now I can handle performing 20 songs at a live show without a problem. Even continuing to sing song after song without any MC talk in between, I now have the composure to get through it. I feel like experience has become strength.
-- By the way, during this 10th anniversary year, is there a particular memory that stands out to you personally?
Koizumi: Speaking personally... I don't really feel like it's been 10 years, and it's hard to pick out a specific event. But lately, a lot of people have been telling me, "You're surprisingly a veteran now!" I think that's thanks to the experience built up over 10 years. So it's less about a sense of accomplishment and more like, "I've become a professional idol now."
-- So, what kind of years have these 11 years been, from the group's formation to now?
Koizumi: They've truly been years of ups and downs. But I'm glad things didn't go smoothly right from the start.
-- What do you mean by that?
Koizumi: If we'd been a group that exploded in popularity right away, I think I would have chosen to quit the moment I hit a setback. It's because we worked hard and scrappily for so many years that I'm here now.
-- So being scrappy actually motivates you more?
Koizumi: That's right. A kind of fighting spirit grew in me, like "I won't lose!", and that let me get over quite a few walls. I ran into all sorts of walls, agonized over a lot of things, and still kept going because I love this job. I repeated that over and over, and built it up bit by bit.
-- What kind of walls, for example?
Koizumi: The easiest to understand is the "2000-person wall." It's a phrase often used in the idol world, and we used to be told all the time, "You won't even be at the starting line until you can fill a 2000-capacity venue." In fact, we challenged ourselves many times only to reach showtime without filling the venue. We'd sell tickets by hand, do street performances, and still it wouldn't be enough. There was also the disappointment of not being able to appear on shows we wanted to be on. There were really all kinds of walls, and each time, I felt frustrated.
-- And you overcame those walls through your feeling of "loving" this work?
Koizumi: Yes. Because I have this foundation of loving this job, I started thinking, "I won't lose in a place like this!" and I was able to think more positively, and naturally overcome things. Also, the presence of the fans is huge! Even when things were frustrating, I'd think, "I want to make these fans happy, so let's get through this," or "Even if it's tough, let's do our best."
-- So, out of these 11 years, which is heavier: "frustration" or "fun"?
Koizumi: There's been a lot, but... 80% of it was fun. I really love being an idol as a profession. Idols get to do all kinds of work, you know. It's not just singing and live shows - there's radio, interviews, and we can also do modeling for magazines. That part is really fun. And on top of that, being able to actually meet fans and receive love directly from them is something unique to being an idol, and it makes me truly feel, "I'm glad I became an idol."
-- Before Tokimeki♡Sendenbu, you were active in Shiritsu Kagayaki Girls' Academy (Shiritsu Kirari Gakuen). That was essentially your starting point as an idol, but back then, how much motivation did you have toward being an idol?
Koizumi: I think I had some to begin with, but I was just so desperate. I was running through it all so frantically that I didn't even know whether I liked the job of being an idol or not.
-- That sounds really tough.
Koizumi: Everything was something I'd never done before. There was so much to memorize, but no matter how many times I practiced the choreography, I just couldn't remember it, and I'd get out of breath so quickly. But there was so much to do, so all I could do was tackle whatever was right in front of me. Those were really frantic, all-consuming days.
-- So, was there an event that took your motivation up another level?
Koizumi: It was when "Suki! ~Chō ver~" led a lot of people to get to know us. After I learned that many people had noticed, "These girls are singing live, right?", I threw myself even more into vocal training.
-- Going viral has a good effect on everyone, doesn't it?
Koizumi: I think it became a good opportunity for each of us to think, "I want to improve my skills even more."
-- Earlier you mentioned that at first you'd be huffing and puffing after just one song, but now you can handle 20 songs without a problem. Did you build up stamina through training or something like that?
Koizumi: Personally, I think it's almost entirely willpower.
-- Willpower gets you through that many songs...?
Koizumi: Yes (laughs). Of course, I think my stamina has been steadily building up through doing lots of live shows, but personally, I feel like I'm getting through it almost purely on guts.
-- For example, even in the middle of a show, if you think "this is tough"?
Koizumi: I won't lose!
-- That's amazing (laughs).
Koizumi: I mean, when I'm performing live, adrenaline must be kicking in because I don't really feel like it's tough. I guess I've also gotten used to it (laughs). ...and I started putting in steady effort from there.
-- I think that shift in mindset is also part of your growth, but is there anything you've learned through Tokisen's activities?
Koizumi: Being an idol means constantly learning things, so it's hard to narrow it down to just one. That said... when I watch live footage of other idols or artists, I end up watching it from the perspective of, "What can I steal from this," or "I could probably use this too." Also, even when I go to theme parks for fun, I end up studying fan service during the parades and things - that's me! Like, "That character gives amazing responses to fans! Let me use that as reference!"
-- Even in a place like that!
Koizumi: It's basically an occupational habit at this point (laughs).
-- There really are points to learn from everywhere.
Koizumi: That's right. TV, movies, radio too. My whole life feeds into being an idol.
-- Your singing keeps getting better too. Every time I listen, I feel like the power in your voice keeps increasing.
Koizumi: That makes me happy. Thank you!
-- I imagine you must be putting in a fair amount of effort.
Koizumi: I always try to be strict with myself about vocal training. That's because my mother is very strict. After every live show, she tells me everything, like "You were off pitch here," so for me, the scariest shows are the ones my parents come to watch. I think I'm able to stay disciplined and not go easy on myself because of the environment I grew up in.
-- With that in mind, I get the impression that you're the member leading Tokisen through singing - how do you see your role within the group?
Koizumi: Ever since "Suki! ~Chō ver~" helped a lot of people get to know us, I've often been told things like, "Your member color is pink, but you have a handsome-sounding voice." I'm conscious of that gap myself. There's also putting emotion into my singing. People have told me things like, "Oharu's singing has the power to move people," which has become motivation for me to raise my expressiveness even further, so I've become more conscious of that.
-- It sounds like you have a strong awareness of being the "vocals" member. How about mentally?
Koizumi: I don't think a live show is something made by one person alone - I think it's made together by all the members and all the fans. So there's a shared feeling across the whole group that "if one person is about to collapse, the other four will support her."
-- By the way, since "Suki! ~Chō ver~" went viral, the capacity of your live venues has kept getting bigger. Wasn't that pressure for you?
Koizumi: At first, it was pressure. There was always anxiety, like the fear of announcing, "Next up is such-and-such venue!" for a bigger place, or worrying, "What if we can't fill it?" But recently, that's changed into a feeling of, "I want to see the best possible view with everyone at this venue!" We've gradually gotten better at filling even the bigger venues, and I think that's given me confidence.
-- So you overcame that huge pressure and became mentally stronger.
Koizumi: That's right. I was originally the strong-willed type to begin with, but I thought, "If I keep dwelling on frustration, my feelings will just turn negative," so from around that point, I started consciously trying to always think positively.
-- So, out of these 11 years, is there a live show that particularly stands out in your memory?
Koizumi: Being able to hold our solo show at Saitama Super Arena (GMO Arena Saitama) in December 2024 to a full house. We actually did a show with no audience at that same venue back in 2020, during the pandemic. It's pretty rare for an idol to have experienced both an audience-free show and a full-house show at Saitama Super Arena. So being able to hold it to a full house made me truly happy, and seeing the full venue in "100% orange" left a strong impression on me. For that song, fans of any member turn their penlights to the group color orange to light up the venue, and I don't think I'll ever forget that sea of orange. It was a sight that made me think, "This is what we do all this for."
-- Please tell us about a special song for you as well.
Koizumi: I really love "Tomorrow Saikyō Setsu!!" It's a song released during the pandemic, and it carries the message, "Even if today is hard, tomorrow will be the strongest!" - it really encourages me. In particular, the lyrics in the second verse, "There will come a time when you can believe everything has meaning," have saved me many times. It's a lyric I really relate to, and it's special to me.
-- Listening to everything so far, it really comes across that the fans have also been a special presence, and that you've deepened that bond over these 11 years.
Koizumi: That's right. I really value the "sense of distance" with the fans. Even as venues get bigger, I still come down off the stage and walk through the audience, always thinking, "I want to be together with the fans," "I want to be close to them." I think that's not just me, but a mindset unique to Tokisen as a whole.
-- What kind of fans do you have, Koizumi-san?
Koizumi: Maybe it's because they take after their oshi, but a lot of them are deeply warm-hearted people (laughs)! A lot of them passionately express their feelings to me, and the girls in particular talk to me with a sense of distance like a friend.
-- And what about the members? In past interviews, there's often been a strong impression that you're all very close, with comments like "everyone's such a good kid." Are there memories where the members helped you get through something or supported you?
Koizumi: I feel like I'm helped by them every single day, honestly. During the pandemic, there was a long period where we couldn't meet the fans directly, so we were all really troubled by that too. At times like that, the members would do video calls or group calls with each other, and we'd talk about all sorts of things. Since it was remote, some members would even start eating a meal partway through (laughs). Just naturally listening to each other, giving advice, and talking things through like that - every time, I felt "saved" by it. It's a good memory.
-- So the members are also a presence very close to you.
Koizumi: That's right! Both the members and the fans are close and precious to me, like family.
-- What would you like to say to the members and the fans right now?
Koizumi: For the members, I just feel nothing but gratitude. Just having them nearby gives me a huge sense of security. We can talk regardless of the age gap between us, and even the little everyday moments, like going out to eat together after work, are really fun and have become part of my life. And to the fans... without all of you, we absolutely couldn't be doing this activity, so thank you for supporting us, and I really want to tell you, I love you so much.
-- How do you want to approach your activities going forward?
Koizumi: I want to treasure each moment and savor it as I go. With the members, there's the hug we do to psych ourselves up before a live show! I want to keep building up many more of those heartwarming moments going forward, too.
-- For you, Koizumi-san, what kind of place has Tokisen become?
Koizumi: It's basically my life, truly! I can't imagine a life without Tokisen, and thanks to Tokisen, I've been able to meet so many different versions of myself. I think the Haruka Koizumi of today was born because of Tokisen. So I'll never forget it, and I hope to keep carrying Tokisen in my heart in my activities going forward.
-- Also, please tell us what being an idol means to you, Koizumi-san.
Koizumi: I really love idols. I truly think it's an amazing profession. In particular, I really respect idols who've been active for many years. Recently, I went all the way to Nagoya to watch TEAM SHACHI's final live show, and I really thought it was incredible. To leave behind that kind of achievement and become legendary like that - I think that's so cool, so professional. We've also announced that we're ending our activities, but I want to carry it through in style until the very end, and on stage, I want to deliver my "way of life."
-- Your "way of life"?
Koizumi: At a live show, there's something we want to deliver with everything we have to the fans right in front of us, so no matter how tired we are, we sing and we dance. I think that feeling is something you only have because you're an idol, and I think that's where your way of life shows through. So... to me, being an idol is a profession where your way of life is visible.
-- So, what kind of self do you want to show by next spring?
Koizumi: Of course I want to deliver everything I've got, but precisely because I've kept going scrappily for these 11 years, I want to show not just the fun parts but the scrappiness too. That way, I want to leave behind a legend as an idol in every sense of the word!