Winter only! The popular incest game is back after a year! Every time you succeed in ejaculating inside the kotatsu without the other family members finding out, you get a prize of 100,000 yen! Even though it's pretending to be a family get-together, in the kotatsu you give your son a footjob, and for a squirting bonus you lick him and finger him! The mother is so excited and thrilled that she can't even cry... her son's semen flows back out of her pussy!