High school student Kana finally got her first boyfriend, the one she had always admired, Ituki. Therefore, she absolutely did not want to fail on 【her first time】 and did not want to be thought of as clumsy. So Kana used her smelly and dirty grandfather, who was being cared for at home, as a practice partner for sex. Her first kiss, handjob, blowjob, and SEX were all with grandpa. All of it was for Ituki･･･
