Akuma no Mama

Seere is a subordinate demon to Amaimon, the eastern King of Hell. Serious in his work, he prides himself on his ability to make any wish come true. But when he's summoned from a grimoire, what awaits him is a little girl with but one wish: "Please be my mama!!" Seere's long road to motherhood starts here!

(Source: Yen Press)