Sarina Tendouji

Sarina Tendouji was a pivotal character in the Oshi no Ko manga series. She was a child patient under the care of the hospital where Gorou Amamiya worked and a fan of Ai Hoshino, which rubbed off on the former. She is Ruby Hoshino's previous life. She later appears in many flashbacks and in some communications with Ruby's inner mind. Sarina had wide eyes and shoulder length hair. However towards the end of her life, she gradually lost her hair and presumably became bald as her condition worsened due to her sickness: anaplastic astrocytoma. In the majority of her appearances, Sarina wore a wool hat with a heart pattern on its brim, adorning it with a bunny pin, Ai's signature symbol. On the surface, Sarina appeared energetic despite her illness, especially when talking about her bias, Ai, or teasing Gorou. Sarina was very passionate about Ai, having watched all her recordings and memorized her choreography down to the smallest details. However, because of her illness, Sarina was depressed by her inability to move as she pleased and became scared of falling, subconsciously bracing herself to fall whenever she attempted to walk by herself. This fear carried on to her next life as Ruby, but she managed to overcome it thanks to Ai's guidance.