My Wife Tsunade - NTR

Yami transmigrated to the world of naruto years before the second ninja war, with little talent he didn't get strength but he got something better, make Tsunade fall in love with him but the second ninja war was coming and he was afraid to die when a system finally he came *show your girlfriend Tsunade's chest to another man in 1 hour and gain kage level chakra* Thus began the story of Yamo the most powerful cuckold