Its a bl(i think) manga about Tanjiro (from Demon slayer) being the one who become demon and his younger brother takes care of him as tanjiro took care of Nezuko. His younger brother has a littile bit long hair and he is handsome as hellლ(´ڡ`ლ).
This one? https://www.mangago.zone/read-manga/kimetsu_no_yaiba_takeo_x_tanjiro_dojunshi/
Yahh!!! Tysm(づ￣ ³￣)づ
Its a bl(i think) manga about Tanjiro (from Demon slayer) being the one who become demon and his younger brother takes care of him as tanjiro took care of Nezuko. His younger brother has a littile bit long hair and he is handsome as hellლ(´ڡ`ლ).