Aoyama Aina, a married woman who fell into a bad friend's trap and fell into a substitute creampie meat urinal
Aina got married and lived a peaceful and comfortable life. Suddenly, an old bad friend consults with him and decides to take over his debt. However, she is cornered by men and her husband refuses to cooperate, so she accepts to become a substitute for her friend. Aina is played with repeatedly and betrayed by her friends, but she falls into a swamp from which she cannot escape, drowning in extraordinary stimulation and pleasure.
