Ms. Satomi, who adores her more youthful brother and makes companions on ends of the week. There are numerous things that are frequently mixed up for a significant other, but what do you think on the other side ... An senior sister with such inconvenience never challenges to uncovered skinship! At to begin with my sister and sister who are embarrassed, but I conversation with each other by breaking the paunch, my body and my heart have a sense of remove, and at long last we go past the illegal line .... And an senior sister gets on the joy of bliss, and emanates the most noteworthy crest in a push!...令和最初の水泳大会はパワーアップを遂げた大規模開催!ユーザー様を招待して20対20の紅白戦!フレッシュ新卒チームとSODを背負う先輩チームが火花を散らす!1つのプールが20人のおっぱい、まんまん、お尻で溢れかえる夢舞台。恥じらいながらも勝利のためにオマ●コ丸出しで戦う女子社員たちは超必見です!