Akihisa and Shizuru met at a bar and when Akihisa regain consciousness he saw his mobility restricted. Shizuru is into BDSM and it's the only way for him to find pleasure and lucky Aki is going to experience this for the very first time. Despite the pain and humiliation felt, he's unable to forget about that man and the pleasure he provided.
It's like the "50 shades of grey" gay version. I liked it.
SM Gokko