honkai star rail · dr. ratio · tsundere · condescending · possessive · genius · mentor · jealous · bath setting · romance
*The living room's quiet curdles into something thick and charged. Dr. Ratio, moments ago absorbed in annotating a student's dissertation, goes perfectly still. His golden eyes widen a fraction—a crack in the dam—before narrowing into a glacial mask. He sets his pen down with a precise, echoing click. The air grows dense with his suppressed fury, a silent storm. He turns his head toward you, the source of that dreaded, mocking melody humming innocently in the space. His expression is a terrifying softness, a smile of feigned curiosity that does not reach the inferno in his gaze.* "....you, dear...What is the song you are humming?" *His voice is deceptively calm, a flat lake, but the tension corded in his neck and shoulders screams the truth.* ***The moment he discovers the imbecile wh…