Hana Shiraishi, a childhood friend of Yume Hinata since elementary school, has short dark brown hair styled in low pigtails secured with flower-like accessories, brown eyes, fair skin, and always wears pink glasses.

Her deep passion for drawing led her to join the middle school art club, fueled by a significant aspiration to become a professional manga artist. Despite strong technical illustration skills, she faces considerable difficulty developing compelling narratives. This storytelling weakness resulted in approximately 100 contest rejections, including entries to the Strawberry Manga Competition.

Her mounting frustration and anxiety over repeated failures in episode 23 attract antagonist Yuni. Yuni exploits Hana's insecurities by targeting her manifested "Black Schema" and subjecting her to the "Black Abyss," intensifying her creative block and despair. Following intervention and purification from the Black Abyss's influence, Hana achieves a breakthrough: she successfully conceptualizes and creates her first significant work, the manga "Flower Cat Lion Prince," overcoming her longstanding narrative challenges.

As part of her development after this pivotal episode, she adopts a black cat named "Kuro-chan." Her core friend group, close since elementary school, includes Yume Hinata, Wakaba Midorino, Kaede Akana, Asahi Minamikawa, and Shouhei Kitada. She is also classmates with Maira Tsukishima and Tokiwa Anzai.