One night stand...................................................[]

Mitsumi always gets in trouble because of his super friendly attitude causing people to misunderstand. They usually think they have a thing for them but he is just nice so that leads to trouble. Mitsumi is depressed after losing his job so went out looking for a one night stand and found one with a Sei, a total stranger (straight but very drunk). After running away the next day he starts looking for restaurant jobs with no avail. However, at the last restaurant he meets Sei who offers him a job

Amano fell in love with his sempai from high school, Ryousuke, who sleeps with anyone and refuses to date anyone. For the past 10 years, Amano always tried to follow Ryousuke who he loved even thou Ryousuke refuses to return his affections. After University when Amano fell on hard times it was Ryousuke who took him in and gave him a job. However, Amano should only do the housework and assist with his job and not interfere with his sex life.

Shizuka and Shizukuni met at a bar and hooked up later that night for a one night stand but they met again three days later at work. Shizukuni is the acting president but Shizuka is trying to keep their work and private life separate by avoiding Shizukuni. However, Shizukuni is not going to give up that easily.

Itsuki was dumped and divorced on Christmas since his wife was bored with him (bitch). For two years after that, Itsuki gets drunk on Christmas but he never noticed that it was usually at a gay bar. After getting blackout drunk, the owner forced the bartender, Minato to take him home.

Kawase Kyuya woke up in bed with an unknown man ,Hozumi, sleeping next to him. Kawase lives in a cheap and soddy place known as the Fukuju mansion which houses a lot of weird occupants. Hozumi and Kawase met at a bar and went back that night but Hozumi keeps mistaking Kyuya for a kyu-chan but despite Kawase's will, he keeps ending up taking care of Hozumi.

Main character cannot handle the body oudor of other people, so he always wears a face mask. However, his buck buddies usually dump him since he refuses to remove the mask. After drinking with his coworker, he randomally slept with a man who he also slapped, when his mask fell off, so he ran away. He met his onenight stand again in an incense shop.