Ayumu secretly admired his ******* Takeshi's girlfriend, the slender beauty Mion.

One day, Ayumu realized he had left his smartphone on the way to his part-time job and hurried back home, where he saw Mion entering the apartment building.

He thought it was strange that his ******* was not there at work, so he went back home and secretly looked into the bedroom, where he found Mion sucking the old man's dick...