I'm so busy with work I can't go on vacation with my wife... But what could go wrong? It's not like she's going to meet two attractive young men who remind her of how pleasant sex can be, turning her into a slut. (Source: Fakku!)

1. Natsuzuma: Natsu, Ryokan, Nanpa Otoko-tachi ni Ochita Tsuma (夏妻 ～夏、旅館、ナンパ男達に堕ちた妻～)
2. Natsuzuma 2: Natsu, Jitaku, Nanpa Otoko-tachi ni Ochita Tsuma (夏妻2 ～夏、自宅、ナンパ男達に堕ちた妻～)

Notes:
- There are two versions of the work: with-glasses and no-glasses.
- A live-action AV adaptation (URE-069) was released on July 25th, 2021 and the second part (URE-078) on March 22nd, 2022.