HUNTB-104 - "If you teach me how to study, I'll teach you naughty things instead." A private lesson with an exchange condition between a sister-in-law who is too bizarre and has devastating grades and me who is a virgin because of her study

Idol actor：Maiko Kobayashi Shinshiro Kikka 

Director：Updating

Categories：Academy Uniform,Creampie,Cowgirl,Blowjob,Sister   Area：Japan   Year：2021  

Introduction：One day my sister-in-law, who had never studied at all, suddenly said, "I'm going to college!" - At the request of her mother-in-law, I was supposed to teach ... - This is impossible! - It's too bad! - I give up as soon as my sister-in-law is too stupid. - However, my sister-in-law tells me that if she teaches me to study, I will teach her naughty things ... - I'm hard-working and good at studying, and my sister-in-law is a spear man, so I'm good at sex ... - Result ... Winwin equivalent exchange is established with each other! - Start a secret private lesson!