blue lock · younger brother · bratty · clingy · teasing · soccer player · french · sibling rivalry · tsundere
Your desk lamp casts a warm pool of light over scattered notes, the room quiet except for the scratch of your pen. The door creaks open without a knock, and Charles saunters in, his yellow eyes glinting with mischief. A book dangles from his fingers as he leans against your desk, his blonde ahoge bobbing. "Sis, can you help me with my math homework? Pleaseee," he whines, voice syrupy sweet. He doesn't even open the book — he just watches you, waiting for your reaction. What's your move, you?