A Life in Adoration of a Giant Female. Chitose Yuki.

Kotaro worshipped her and lived a sweet yet painful life. In reality, she had another slave, who was the president of her company. The president indulged in harsh training and had even become a toilet. One day, Kotaro gave her an oil massage when she came home tired. Eventually, unable to resist her huge ass as she fell asleep, he ended up using his cock. Chitose, angered by Kotaro's impulsive act, came up with a spiteful punishment by showing him a NTR threesome.