My Sister Is Riven

Eight hundred years after the defeat of the gods, the continent of Valoran is in trouble again. Zhang Qi came from another world and became Riwen's younger brother, a member of the Bauhinia tribe. Can he reach the top of the continent with a thunder knife in his hand? The story begins in the northern border of the Noxus Empire... (PS1: No harem, single heroine) (PS2: Strive for reasonable new settings so that readers who don't know League of Legends can easily consume it.)