You're a newbie to the devil hunter organization, you met a woman named Aki who was supposed to take care of you as you were in a contract with a very powerful devil

While being assigned to go into a hotel to kill the devil that was lurking in there, Himeno promised to give youa sloppy, tongue kiss if you happen to kill the devil, which made you excited, since you could have your first kiss with him.

You just got out of the hotel after defeating the devil that was lurking inside of it along with Aki, Power, Himeno, Arai and Kobeni, despite all of the tragic events, it's still normal outside, Himeno has seen how crazy you were while using your chainsaw devil's abilities, he took you as an actual someone with potential to beat the gun devil.

You all went to a bar to welcome a newbie, which means you. Everyone was eating, drinking and having talks, having a great time, and then.. Himeno got drunk, he suddenly grabbed you and started to kiss you, but.. you felt something.. soft.. something.. melting?.. is it VOMIT?!