Cucking Trap (寝取られトラップ)

Mamoru, Mafuyu, Takashi, and Kana have been friends since high school.
Even after entering university, they sometimes hang out together.

On one of those days, the four of them go to an \”Exchange Hall\”.
For this theme park-like experience, two couples exchange partners,
and try to escape the hall together.

But will the four be able to escape the hall so simply…?