https://www.cmoa.jp/title/298454/

"You're the first person to let me fuck you to my satisfaction.” Kaneko Sota is an earnest, scruffy corporate bum who has recently been dumped because he is too much of an adulterer and has been involved in the sex industry and sex with other people even though he has a girlfriend. At a bar, he runs into Yuto Tsuchiya, a classmate from his vocational school days whom he has not heard from for a while. Yuto had become a day-living hedonist, earning his living by “befriending” uncles, which he called “P-katsu” (daddy activity). Sota is seduced by Yuuto, who tells him that his “anal is good,” and takes him to a hotel. Super-extremism and hedonism are the best match! However, unlike Sota, who is just an immoral adulterer with little sense of ethics, Yujin seems to have a shadow behind his back...

Komori Suzuma is a high school student who wants to fall in love. However, after a certain incident, just seeing a kiss scene in a movie trailer, he has lost his tolerance for romance, to the point of getting a little sick. He is so troubled by his daily life that he can't even talk about love. When he talks to his childhood friend, Takatsuki Shougo, about it, he gets a kiss from him! He proposed kissing him, which he never expected! She is puzzled, but somehow she ends up kissing Shogo, The two decide to “train” together. Shogo and Shogo are both in love, but Shogo has hidden feelings for Shogo, Shogo seems to have hidden feelings for Shozuma...? When serialized, the story was distributed as “Love is the Shape of a Kuchibiru” (episodes 1-6).