Isekai Toubou no Aibou wa Koi wo Shiranai Ouji-sama

Isozumi Amane is a student at the city's art university. Aside from his slightly complicated upbringing, Amane is just an average young man who likes shojo manga, light novels, and games.
It was just another typical day of finishing his assignments, going back home, and then going to bed but when he woke up, he found himself in another world!
After a group of children found him in the forest, he was taken in by the church. While he was living there while hiding the fact that he was from another world, a mysterious man appeared!?

(Source: Comic Fleur, translated)