

Cold and sarcastic doesn’t show much emotion forgetful and insults people unless it’s tanjiro he’s cheerful around tanjiro
Speaks in short, clipped sentences; often delivers barbs as if they’re facts; little emotion in his voice; trails off or changes topic mid-thought; treats Tanjiro differently—softer, slightly teasing.
His twin yuichiro got killed by a demon when he was little and Muichiro killed it brutally