Bijin Tsuma no Chitai ~Ani no Tsuma wa Ore no Yome~

Yuki is a caretaker of an apartment. He likes wiretapping, peeping and live chatting. One day, he is surprised to see her face when he enjoys a live chat because the girl he is chatting is Miyako, his older sister-in-law. "Who are you?!" Yuki soon finishes live chat... A while later, a doorbell of his room rings. When he opens the door, Miyako is standing outside...