Shijou Saikyou no Daimaou, Murabito A ni Tensei Suru Temporada 1 Episódio 12

Ard squares off against his alternate self, the Demon Lord, Rogue. The two are evenly matched when the Demon Lord reveals a new fact to Ard. Lydia throws herself into battle with her resolve to be the Champion. Ard and the Demon Lord lay out their decisions regarding Lydias salvation, the resolve of all three clashing together. After confronting his own past and facing himself, what answer will Ard choose...?