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!)

Nakimushi Akuma no Maria-kun was published digitally in English as My Demon Cry Baby, Maria by Renta! from November 8, 2019 to March 31, 2020. The included spin-off series Mariya-kun to Shinigami-san was published digitally in English as Jun and the Grim Reaper by Renta! from January 15, 2021 to February 19, 2021.