Kyonyuu no Oyako ni Osewa ni Nattemasu. Haha-hen

Ren is a live-in gigolo who happens to have a naughty relationship with a big-breasted mother and daughter. The daughter, Koharu, seems to be going to a girl friend's house for a sleepover during the summer vacation, so he spends a night alone with the mother, Sakura, who is left behind.

(Source: toranoana, translated)

Note: Released at Comic Market 101