Miho: “Haa...Haa...I cummed...It felt good...But what is my feeling of immorality...? Because did I have the sexual relationship with the guy who my big sis had loved?”
Maho: “I'm happy...But I'm scared for my happiness become disappeared...Will Makoto love us equally for future...?”
Makoto: “Well, I should inform my mom and Shiho-san that I can't return my home today.”