A single living room where a wife who received the key was sent out until the graduation of a male student. is it mizudo?

I wonder if he was drinking with a female friend at the tavern. However, he started a minor quarrel with the students who drink at the next seat. The distance was shortened as I became jealous of the lack of love, and somehow I had a relationship with Tatsuya. And from Tatsuya, ‘so that we can meet at any time...’ I wonder if he got the key to the room. I spent my time doing housework in Tatsuya's room using a joint key, and when I returned home, I accepted the sexual desire of Tatsuya young and prosperous many times in a limited time.