Name/Stage Name: CHU². Real name is Chiyu Tamade. Birthday/Zodiac: December 7th, Sagittarius. Age/Grade: 14 years old (equivalent to a 9th grader). Due to her high intelligence, she has skipped grades and attends an international school as an 11th-12th grader (equivalent to a high school junior or senior). Blood Type/Height: Type O. 140cm tall, very petite, and the shortest member of the band. Role/Position: The founder, DJ, and music producer of the band "RAISE A SUILEN (RAS)." She is the de facto leader who handles all songwriting and composition. Likes/Dislikes: Her favorite food is beef jerky. She dislikes salads (vegetables in general) and taking baths. Origin/Family: Born in Tokyo. Her mother is a world-renowned musician. She lives with PAREO in a luxury high-rise apartment in a prime Tokyo district.

Name/Stage Name: LOCK. Real name is Rokka Asahi. Birthday/Zodiac: July 17th, Cancer. Age/Grade: 16 years old. She is a 10th grader at Haneoka Girls' High School, the same school as Asuka Toyama and Tsugumi Hazawa. Blood Type/Height: Type A. 152cm tall, on the shorter side, characterized by her large round glasses. Role: Guitarist for the band "RAISE A SUILEN (RAS)." Likes: Poppin'Party (she is a die-hard fan and refers to them as "Poppin'Party-san"), playing guitar, and white rice. Since her family runs a public bathhouse (Asahiyu), she also loves taking baths. Dislikes: Scary things like horror movies and haunted houses. She lacks self-confidence, so pressure is also a major weakness. Living Environment: Moved to Tokyo alone from her hometown in Gifu Prefecture. She lives at the public bathhouse "Asahiyu" run by her relatives while working part-time at the live house "Dub."

Name/Stage Name: MASKING. Real name is Masuki Sato. Commonly called Maski. Birthday/Zodiac: May 12th, Taurus. Age/Grade: 18 years old. She is a 12th grader at Shirayuki Academy. Blood Type/Height: Type O. 170cm tall, very tall with a top-tier physique among the band members and female characters in the series. Role: Drummer for the band "RAISE A SUILEN (RAS)." Likes: Girls' manga, cute things in general, pancakes, and ramen. She also enjoys bonsai as a hobby. Dislikes: Ghosts (horror, ghost stories) are her biggest weakness. She also dislikes troublesome things and anything that lacks integrity. Family/Environment: Her family runs the live house "Galaxy," and she helps out (works part-time) for her father, the owner.

Name/Stage Name: LAYER. Real name is Rei Wakana. Birthday/Zodiac: January 13th, Capricorn. Age/Grade: 18 years old. She is a 12th grader at Hanasakigawa Girls' High School, which many seniors from other bands also attend. Blood Type/Height: Type O. 162cm tall, the second tallest after MASKING, boasting a very mature and sophisticated appearance. Role: Bassist and lead vocalist for the band "RAISE A SUILEN (RAS)." Likes: Her favorite drink is hot milk. She also enjoys songwriting and taking walks. Dislikes: Insects are her absolute worst nightmare; if she sees one, she panics to a degree unimaginable from her usual cool demeanor. Relationships: She is childhood friends with Tae Hanazono (O-Tae), the guitarist of Poppin'Party, as they attended the same music school when they were young.

Name/Stage Name: PAREO. Real name is Reona Nyubara. Birthday/Zodiac: March 25th, Aries. Age/Grade: 14 years old. She is a 9th grader at Kamogawa Chuo Junior High School in her hometown of Kamogawa, Chiba Prefecture. Blood Type/Height: Type O. 161cm tall. Despite being the same age as CHU², she is quite tall and has an excellent, slender figure. Role: Keyboardist for the band "RAISE A SUILEN (RAS)." Likes: CHU²-sama, jerky (CHU²'s favorite), and she is a passionate fan (otaku) of the idol group "Pastel＊Palettes." Dislikes: Being disliked by CHU²-sama, and she is not fond of tomatoes. Skills/Lifestyle: Her special skill is making cute sweets. She usually lives at CHU²'s high-rise apartment taking care of her daily needs, returning to her hometown on weekends.