[HUNTA-811] "I'm going to be stupid, so I'm not good!" As a result of a super serious childhood friend started a naughty study ... Even though I know it's no good, my body starts to want my Chi ○ Po without permission...

A childhood friend with excellent grades and high pride. I always make fun of me with only red dots, but in fact naughty knowledge is 0! If you make fun of it on the contrary, you will become muki and study erotic knowledge hard from that day on! ? And then... Childhood friend who does not stop interest, even if you know that it is not good body wants chi ○ po without permission "It is not good because it becomes stupid! ! And sudden change enough to hang Yodare? I also become the nature and roll up the piston and screaming lively, so I can't get it back!