【River Pig Poison】Prisoner’s friendships. Available at:

“I was born into the lineage of a succubus.
A shy girl named Toyoko Osakabe, who is

One day, by chance, she and Morigaya, a boy in her class, are trapped in a gym warehouse.
This is an original CG collection of unintentional temptations and outbursts, and finally becoming [friends].

There is no succubus form! (Her appearance is still human.)

Basic CG:11 pages
Standing pictures:85
Main story including differences: 134 pictures
Total:438 pictures (including ver without text)