HUNTB-429 Woke up in the middle of the night to find my younger brother masturbating and the ending

Move to Tokyo and live alone in an apartment one minute walk from university! I was shy and harmless, so a girl in class told me, 'I'm coming early tomorrow, so please stay the night! ] and come! Of course, I don't have the courage to do that. That's why I secretly watch AV in the middle of the night and chew. However, a girl who was supposed to be sleeping was looking at me like that!