義理のフェラチオ、気にしないならお前のチンコをしゃぶるだけだよ パート1

Because my wife was hospitalized, her mother-in-law came from her parents' home to help out. As usual, she was doing the household chores, bathing, helping me with my evening drinks, and giving me waist rubs to show her filial piety.... As I watched my mother-in-law, who seemed to be what I was doing, I became aware of her. That night, perhaps because I didn't have a wife, I finally lost my patience...