The Boy of Promise

The Boy of PromiseHeir to a brutal Yakuza clan long thought erased, Ryuji walks the school halls like a ghost—quiet, cold, untouchable. In the underworld, they whisper his name: The Black Vow—a living curse, bound to a promise written in blood.His target? The syndicate that slaughtered his kin.His obstacle? Their daughter… the only one who’s ever seen through his silence.