Something like this Mc acts like mob character for example: MC is the younger brother he has an older sister which he act overprotective like "whos that want to flirt with my big sister ill beat you up" can be the little sister too. no reincarnation no transmigration it doesnt make sense if an old dude resided in young body act like kid like that... its too much. Can be CN KR JP i dont care but no yuri no yaoi and the mc is male lead. I already read: Uchi no Musume no Tame naraba, Ore wa Moshikashitara Maou mo Taoseru kamo Shirenai - where mc got jealous easily everything that related with latina(heroine)