Height
170.00 cm
Birthday
February 28 2000
Seta Kaoru is a third-year student at Haneoka Girls' High School and the guitarist of Hello, Happy World! She is very popular with ladies, whom she dubs her "little kittens". Himari and Rimi in particular have a tendency of blushing in her presence. Outside of the band, she is also Chisato's childhood friend, and their parents are good friends as well. Kaoru is a tall girl with angular facial features, slanted crimson eyes, and long purple hair worn in a ponytail. She has chest-length forelocks and bangs that frame her face with a single lock that hangs loosely between her eyes. Her casual attire is normally boyish and formal. In her initial casual wear, Kaoru wears a high-collared white shirt with a black vest on top of it, black vertically striped loose pants, and a pearl necklace as a finishing touch. During winter Kaoru wears a gray sweater with white stripes at the top and bottom, a black loose scarf around her neck, and white jeans. During summer she wears a white front tie shirt which has black flowers on the left side, a blue shirt underneath, and high-waisted jeans with a brown belt. Her outfit is completed by a thin chain necklace. When she was younger, her hair reached only up to her shoulders; after middle school, she started growing it out. A flamboyant actress, Kaoru has an extravagant personality. She is rather pretentious and bombastic, having a tendency to use impressive-sounding words to the point of sounding foreign and hard to understand. She sees herself as a prince and sees other girls as the princess while quoting Shakespeare or other philosophers (sometimes incorrectly). She appears highly flirtatious and is very popular among other girls, not only for her passionate mannerisms but because she is also surprisingly reliable. If she is aware someone may be in a bad mood or feels sad, she will try to encourage them or help them feel better. When by herself, her "quirks" seem to lessen, if not vanish entirely at times. She appears to be aware of how she can come off to others; sometimes she struggles to have time to herself due to having so many fans and is aware that she likes certain things that don't fit her "character". She is even able to increase her actress's personality if she feels it is necessary. Though she appears very intelligent, she can often be just as airheaded as Kokoro and Hagumi - such as mistakenly assuming the philosopher Friedrich Nietzsche was a woman, or repeatedly attempting to push on a door that can only be opened by pulling. Her catchphrase is "fleeting" - though when Hagumi or Kokoro questioned her about what it meant, Kaoru could not answer. Despite appearing to be very prideful, Kaoru struggled with self-esteem problems in the past and created her princely persona to flatter other girls so they may never feel the same way. She also used to be shier and lamented the fact that she was not strong enough to protect Chisato from their classmates believing she was an evil and mean person because of one of the roles she acted in.

BanG Dream!
When Kasumi Toyama was out camping as a child, she heard the rhythm of the "Star Beat" while admiring the starry night sky. This sparkling, heart-pounding sound left a lasting impression on her, and since then, she has constantly been seeking to rediscover that exciting thrill. Now, as a newly enrolled student of Hanasakigawa Girls' High School, Kasumi is more determined than ever to find that long-lost sensation again. She attempts a myriad of school club activities, and even considers taking up a part-time job, but none of these feel suitable for her. That is, until she chances upon a star-shaped guitar in the storage room of an old pawn shop. It leads her to a live house, where she is captivated by watching a live performance for the first time. Spurred from the adrenaline, she instantly decides to form a band without even really knowing why. However, such a venture requires her to confront various hurdles with new friends she makes along the way, all in her pursuit to encounter that twinkling, heart-throbbing ardor once more.

BanG Dream! 2nd Season
Kasumi Toyama and the members of Poppin'Party—their high school band—are now second-year students, but with the new school year comes their latest set of challenges: student council duties, cram school, and part-time jobs, among other things. Furthermore, they are now separated into different classes, and as a result, their free time together is shortened. Looking back, their joyful times together seem like nothing more than an unachievable fantasy when their members are too occupied to even gather in Arisa Ichigaya's basement for practice sessions. As the band ponders over the situation, an unfamiliar girl suddenly emerges, unknowingly pulling them into the spotlight once more. In this rising era of girl bands, Afterglow, Pastel*Palettes, Roselia, and Hello, Happy World! begin to make their appearance as well. Each band, comprised of musicians with their unique personalities, illuminates the stage with its performances. As Poppin'Party returns to the music scene and encounters new friends, the sparkling, heart-pounding music starts to play once again!

BanG Dream! 3rd Season
As the all-girl band Poppin’Party continues to rise in fame, they find a poster for an event at the legendary Nippon Budoukan. Now determined to participate in the "BanG Dream," Kasumi Toyama and the other members of Poppin’Party aim to reach new heights and prove their worth by performing on that renowned stage. Meanwhile, rival band RAISE A SUILEN dreams of changing the world with "the strongest music," but finds itself in dire straits without a guitarist. Though dozens of potential candidates audition for the role, band leader CHU² believes them to be amateurs and unsuitable for the band. However, there may be one guitarist that lives up to CHU²’s high standards. BanG Dream! 3rd Season features multiple all-girl bands, including Poppin’Party, Afterglow, Pastel*Palettes, Roselia, Hello Happy World!, and now RAISE A SUILEN, as they work to astound fans throughout Japan with their spectacular performances. As the BanG Dream competition draws near, the band members are prepared to captivate audiences with their heartfelt music!