why do i feel like blonde is a hitman/gangster or the son of one and his target is the the...

why do i feel like blonde is a hitman/gangster or the son of one and his target is the the gray haired boy (cuz isn’t his parents rich or something?) or maybe blonde is a hitman/gangster but he ends up killing the gray haired guy even tho it wasn’t his mission. either way the gray haired guy is destined to die