OVA
Description
Tsubomi Hiiragi is a 17-year-old female idol. Her birthday is listed as January 4 (Capricorn), though an early source noted December 20. Most sources report her blood type as B, with one conflicting report of type A.

She possesses shoulder-length pale brown hair swept to the left with bangs, brown eyes, slightly shorter and thicker eyebrows than her peers, and a lighter skin tone. Her image color is light green, reflected in her penlight and character motif. She favors casual styles like sneakers, sweaters tied around her waist, and vests.

Tsubomi embodies a carefree, fun-loving, and energetic personality, often acting as the mood-setter. She identifies as a "Gyaru" but actively challenges negative stereotypes by demonstrating professionalism. Her interests include comedy shows, taking selfies, karaoke, and visiting net cafés. Her motto is "If it doesn’t kill you, it’s just a flesh wound" (Japanese) or "If you’re not dead, you’re not done" (English). She tends to forget negative experiences quickly and gives nicknames by adding "-cchi" to others' names. Favorite foods are parfaits, sweet pastries, and okonomiyaki.

Initially claiming Tokyo origins (born in Shibuya, raised in Harajuku), she later revealed she actually came from Aomori Prefecture. She moved to Tokyo to live with her cousin but left to avoid burdening them, subsequently living in a net café before joining the idol group. She is the oldest of seven siblings and adept at caring for others. Her dream is to become a "cute bride."

She maintained close friendships with Mikami Kamiki and Yuki Tojo, who knew her before the group. She nicknamed Yuki "Yucchi." Interactions include holding hands while expressing affection towards Ayaka Tachikawa and using Miu Takigawa’s lap as a pillow during a Christmas event.

Her surname Hiiragi (柊) means "holly." She was designed by Mel Kishida. Tsubomi officially graduated from the idol group on December 26, 2021, and her character was retired thereafter.