College student Satoru Shiiyama had a crush on Jun Mariya ever since middle school, but the object of his affections dies in an accident. In the midst of his grieving, Satoru accidentally summons a demon and gets a once-in-a-lifetime offer: "In return for your life span, I'll grant you a wish." Having lost all hope, Satoru agrees. Just what is the wish that he made? This is a heart-warming(?) love story between a selfish, lustful guy and an honest, cute little demon.

(Source: Renta!)