Mairimashita! Iruma-Kun is a Manga/Manhwa/Manhua in english language, Comedy series, english chapters have been translated and you can read them here. You are reading chapters on www.bluelockepisodenagi.xyz fastest updating comic site. The Summary is

Suzuki Iruma is an ordinary high school student who finds himself sold to a demon by his irresponsible parents in exchange for money. Instead of meeting a grim fate, Iruma is taken in by the kind-hearted demon, Sullivan. Iruma soon learns that he has been enrolled in Babyls, a school for demons in the Demon World.

At Babyls, Iruma must navigate a world filled with powerful and mischievous demons while keeping his human identity a secret. Despite the challenges, Iruma finds himself becoming friends with various demons and getting involved in the school’s activities, all while trying to adapt to his new life and avoid drawing attention to his true nature.

The series blends comedy with supernatural elements, creating an entertaining and unique story about Iruma’s adventures in the Demon World.