Mirai Takahashi: ``When I was in third grade, I secretly looked at the naughty books my parents had and masturbated. I was so excited by the thrill of doing something so bad and wondering what would happen if I found out...I sometimes get horny when I have sex by myself, but once I started I couldn't stop, so I did it for 3-2 hours straight. Masu. It's embarrassing and erotic to have the fantasy of doing it alone when someone you like asks you to masturbate.The number of times I've had sex in a week is about 3 times, but there have been days when I've had sex 1 times in one day. I was so excited that I was being asked so much. What excites me the most is... it feels the best when I'm fucked with a toy and it's inserted right away when I'm in a crazy state... And for me...'' Miho Wakabayashi: ``My sexual awakening was early... When I was sitting on a chair and I pressed myself against it, my crotch felt so good...I was remembering the naughty depictions in girls' manga...and I would sometimes touch my crotch with my fingers... My first experience was when I was 10 years old, on the roof of an apartment building...I want to be held by someone I like with my penis inserted for hours on end...I have sex by myself...almost every day... It's been about 1 hours since my body went limp...It feels good to go to sleep...Womanizer is a necessity...And for me...'The desire for sex that grows in the girl's heart...springs from the body. The incessant exploration of sex between the younger sister character idol ``Mirai Takahashi'' and the new loli character idol ``Miho Wakabayashi'', their pursuit of pleasure, part 4, and their absent-minded state.