[UMD-1010] My sister came to Tokyo with her colleague (boyfriend) for a company event, but couldn't book a business hotel, so she had 3 days of sex in my room!!

My sister moved to Tokyo for work with a colleague's boyfriend. Due to inbound demand, I couldn't stay at a hotel in the city center, so I ended up staying in my room... My sister, who was supposed to be sleeping next to me (on the bed), moved to my boyfriend's place in the living room. Huh?! Unbelievable sex in my room!? Putting on the futon and ending the day, it's so long~ long!! Huh?! How long will this continue?! The next day, I gave my sister a strict warning! When I asked my sister, she said her boyfriend is 'Insatiable.' Sorry, I won't have sex anymore, so I asked for one more night. (The event was hosted by my sister in the morning session, and my boyfriend in the afternoon session.) My sister was at the event venue, and her boyfriend was in the bathroom. Unbelievably, a insatiable boyfriend masturbates at someone else's house. I shouted at her!! He sits naked and sits kneeling to apologize, and she looks just like the dog he kept at home, and naturally, she steals the squishy thing and starts having sex!! That night, my sister came home from the morning staff for a party and was already blasted. I ended up getting along again with him who brought back a souvenir、、、。