Warning: This is a smutty story.
If I’m not mistaken, this is the very first smut manga that I’ve read. I, at that time, still do not know what smut is nor have been introduced to the other works of Shinjo Mayu like Kaikan Phrase. I thought that this is so vulgar and that I would be wasting a lot of time reading this. What surprised me more is that it definitely has a story.