The heroine, Hirose Rumi, witnesses Makihara Airi, a senior employee at her workplace who got married a few months ago, entering a love hotel arm-in-arm with a man different from her husband.

He looks familiar, but she cant remember... Shes convinced shes having an affair because hes clearly not the same man as the groom she saw at the wedding.

I couldnt ask any questions to Airi herself, my days were filled with confusion. By chance, she meets Shinji on the street.

Because she was drunk, Rumi threatened Shinji about the affair, took him to her room and pushed him down. The next morning, when he wakes up from her drunken stupor, she panics and sends Shinji away, but the video she took on her phone clearly shows her attacking Shinji.

I did a bad thing, I blame myself, but the sound of myself drowning in pleasure makes me sexually curious. Before she knows it, shes looking for Shinji, and then they meet again. I want to... feel it again.

With this in mind, she invites Shinji to a hotel, and before she can even imagine his unimaginable energy, Rumis body and mind are dyed by him and she falls in love with him.

Shinji is a masochistic, immoral man who has been trained by Airi. Rumi is a crass girl with zero girl power. What will happen to their love?