Since the story seems good and it’s easy to translate … I decided to translate this WN
here the “prologue”
「From now on, will you accompany me?」
――The moment he confessed to the girl he walked together with and loved, the boy was thrown into the future. The one who summoned him was the Princess of the Demons. It was he who killed the descendants of the Demon Lord.
「P-Please, Great Demon Lords……
please save us demons from the evil hands of the adventurers……!」
To save the demons on the verge of their downfall, and also to meet the girl he loved, he once again rose up――not as the Hero Isagi, but as the Demon Lord Candidate Isagi.
(I take the synopsis from Natsulus ;9)