【Rico-ba & Ico-ba】sex research with big brother
[Ranking]Not ranked
Title：sex research with big brother
Maker：Rico-ba & Ico-ba
Release date：2018/08/13
Genre：glasses, Lolita, sister, Loveable/Awesome, Wedded, Incest
Summer vacation. Ayumi was going to ask her brother about her free research. However, her brother is absorbed in a naughty book. Is it really that good to have sex? Ayumi’s curiosity leads her to research about sex, but what will happen?
Manga:18p
