Sarina Tendouji

Sarina Tendoji (さりな) is a supporting yet pivotal character in Oshi no Ko manga. 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.

Appearance
Sarina has wide eyes and presumably bald hair due to her sickness: anaplastic astrocytoma. In all her appearances, Sarina always wore a wool hat with a heart pattern on its brim, adorning it with a bunny pin, Ai's signature symbol.

Personality
On the surface, Sarina appeared to be an energetic girl 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.

Etymology

 * The name Sarina is written in hiragana (さりな), which has no special meaning. However, when written in kanji (咲梨菜, 紗利奈, 紗里愛, 紗莉菜, 小鈴奈, 颯鈴奈, 彩里奈, 砂里奈, 沙里菜, 叉梨那 or 佐梨奈), it could possibly mean:
 * 咲梨菜 - "blossom" (咲) (sa), "pear" (梨) (ri) and "vegetables, greens" (菜) (na).
 * 紗利奈 - "thread, silk" (紗) (sa), "benefit, advantage" (利) (ri) and "apple tree" (奈) (na).
 * 紗里愛 - "thread, silk" (紗) (sa), "village" (里) (ri) and "love, affection" (愛) (na).
 * 紗莉菜 - "thread, silk" (紗) (sa), "white jasmine" (莉) (ri) and "vegetables, greens" (菜) (na).
 * 小鈴奈 - "small" (小) (sa), "bell" (鈴) (ri) and "apple tree" (奈) (na).
 * 颯鈴奈 - "sudden, sound of the wind" (颯) (sa), "bell" (鈴) (ri) and "apple tree" (奈) (na).
 * 彩里奈 - "color" (彩) (sa), "village" (里) (ri) and "apple tree" (奈) (na).
 * 砂里奈 - "sand, grit" (砂) (sa), "village" (里) (ri) and "apple tree" (奈) (na).
 * 沙里菜 - "sand" (沙) (sa), "village" (里) (ri) and "vegetables, greens" (菜) (na).
 * 叉梨那 - "fork, crotch" (叉) (sa), "pear" (梨) (ri) and "what?" (那) (na).
 * 佐梨奈 - "help, aid" (佐) (sa), "pear" (梨) (ri) and "apple tree" (奈) (na).
 * Sarina's surname Tendoji means "cherub, gods disguised as children, children parading as cherubs" (天童) (tendo) and "temple" (寺) (ji). There is a temple in China named Tiantong Temple, which has the same kanji as Sarina's surname.

Trivia

 * Both Sarina and Gorou are the only characters that were introduced without a surname, all the way until Chapter 75 where their surnames are both revealed.