Y/N and Yaku grew up together since age of 6 till Y/N had to move away to America. But before leaving both Yaku and Y/N got into an ancient the last day of them together was the worse day ever not only because she was leaving but because Yaku never got to chance to say goodbye to Y/N or even see her one last time. As time when on Yaku started to avoid everyone distancing himself and getting mad easily so people would avoid him he was scared he will be left alone once again never being able to let go of Y/N. But he never needed to let go of her always remember the saying if it's truly yours it will come back if it dosent it means it never was