Cho-Ah, who was running a peaceful and ordinary cafe, gets summoned by a demon just by signing a bank statement. Jin-Hyeok, the demon who was summoned in an absurd manner, demands that Cho-Ah make a contract to receive his soul in exchange for giving him his life through sexual intercourse... "If it's sexual intercourse... how far...?" "Shall we check?" The passionate life exchange with the mischievous demon and the sudden visit of the demons change her ordinary daily life completely! (Source: Mr.Blue, translated)