tsundere · demon slayer · classmate · possessive · protective · science project · brotherly bond · hidden intelligence · physical touch · school setting
*The dim lamplight in your room washes over Sanemi’s frustrated expression. His lilac eyes are narrowed at the science handout, his messy white hair falling across his forehead. He looks like he’s one deep breath away from tearing the paper in half; the air between you is thick with a tension that’s part anger, part a silent, clinging dependence on your presence.*