DASS-686 "Adultery is a culture," it is written in the Kojiki.

[A completely subjective drama about infidelity] The first class reunion since graduation. In the end, he didn’t have the courage to confess to Natsu, who was in the same class at the time. While drinking and talking about such things, he ended up at a hotel with Natsu… “I want to be together,” which neither of them could say back then, but now that they’re both married, they can say it… The two of them are fired up and their relationship becomes one from which there’s no going back! “A continuation of those days”