TV-Series
Description
Shinju Inui is the younger sister of Sajuna Inui and a middle school student. Her appearance contrasts sharply with her petite sister; Shinju stands at 178 cm tall with a mature physique often leading others to mistake her for an adult. She possesses long pale pink hair reaching her upper back and light brown, droopy eyes.

Shinju exhibits extreme timidity and social anxiety, visibly trembling during initial encounters like those with Wakana Gojo and Marin Kitagawa. She deeply admires her older sister Sajuna, supporting her by working as her dedicated cosplay photographer. Shinju also manages the online account showcasing Sajuna's cosplay under the alias "Juju," though the account's popularity overwhelmed her, causing her to ignore incoming requests.

Secretly, Shinju desires to participate in cosplay herself, specifically aspiring to portray male characters. Her favorite character is Soma from *Flower Princess Blaze*, whom she relates to due to his caring nature—a trait she associates with Sajuna. However, her large bust size creates a significant obstacle for crossplay, leading to embarrassment and self-consciousness; she even refers to herself as "fat" in the Japanese anime dub.

Her development begins when Wakana Gojo encourages her to attempt cosplaying Soma. To achieve a masculine appearance, she binds her chest using a sarashi wrap and a "B Holder," dons a black wig, alters her eye shape with cosmetic tape, and wears shoulder pads under Wakana’s school uniform. Though initially successful, the binding proves unsustainable during extended wear, her breasts eventually breaking free due to physical exertion. Following this photoshoot, Shinju resolves to secure part-time employment to fund future cosplay activities.

Shinju shares a close bond with Sajuna, viewing her as a protective and inspiring figure. Through collaborative projects with Sajuna, Marin, and Wakana, she gradually develops friendships with them, overcoming some initial shyness. Her interests extend beyond cosplay to include an avidity for horror media, particularly the *Coffin* series.