Demon Slayer: The Moon of Time

Muichiro Tokito, Yuichiro Tokito's younger brother, quietly watched his bandaged brother argue furiously with a woman with long black hair and golden eyes. “Yuichiro Tokito! I'm telling you, if you don't rest and heal properly today, I'll break your legs!” “I told you I'm fine. Worry about yourself first. Whose arm was broken again?” “Damn it! At least my injuries aren't as bad as yours! And you call yourself fine? Your mouth's the toughest part of your whole body!” “I @#%&:#…” Muichiro Tokito calmly drank a cup of tea, picked up his Nichirin Blade, and went off on a mission. Muichiro Tokito had more than once felt like the casualty of their arguments. Sigh... The female lead transmigrates; no Breathing Style is used.