A month long-distance incest with my son who has moved to Tokyo This month I go to hold him again.

"I fell in love with my son as a man." Yusuke moves to Tokyo to attend university and goes to the apartment once a month to take care of him. However, as they went there many times, their love for their children eventually transformed into feelings for the opposite sex, and they ended up making a promise between men and women that they should not overcome. "There's no way we can be allowed to do this kind of relationship if we don't meet for a while, and that's definitely good...but that's fine." Yui continues to ask herself, but the ache in her body is even more intense than I imagined, and again this month...