Mairimashita! Iruma-kun (Welcome to Demon School! Iruma-kun)

Mairimashita! Iruma-kun Synopsis: Mairimashita! Iruma-kun is the story of a boy named Suzuki Iruma, who was contracted by his parents to sell himself to the devil in exchange for money and peace. Poor Iruma boy, from the time he was a toddler (1 year old), had to "go out into society" and roll around with his two "joyful" parents until the day a demon came to take him to the Demon Realm on indenture. As if he were about to enter the devil's stomach, this old devil cried and asked him to be his grandson, and with his honest and kind nature surprising even himself, he reluctantly agreed. accepted the offer and entered Evil's school of his choice. What will happen next? Please follow Iruma-kun's unusual school life. (Source: Mangamonster.net)