【PC】哥哥，早起前要一直抱紧我哦！｜ずっとギュッてして！

四人の妹のお兄ちゃんである主人公は、小さい頃に酷い喘息を患っていた。

その事がきっかけで『妹のだれか一人と一緒に寝る』ことが日課となっている。

そんなある日、研究者でもある両親から『ハグによる免疫向上』の実証実験を命じられてしまった。

「毎日寝る前10秒以上、愛情もって妹をハグしなさい♪」

一緒に寝る妹と、毎日ハグする時間を設ける事に決まるのだが……

過保護な妹と寝るまで少し、あま～い抱擁、しませんか?

The Onami girls' endlessly affectionate brother developed asthma at a young age, which left him bedridden for much of his early life. Now that his health has improved, he does his best to make up for lost time through online learning. His medical researcher parents have used the unique opportunity his illness provides to gather data about his condition, which has greatly contributed to medical science. As a result, they've encouraged him to get plenty of sleep and lead a calm, relaxing life so that he'll make for a better research subject and help people all over the world. However, those same parents throw a wrench into his peaceful life when they come up with an idea to boost immunity through hugging. Now every evening he has to choose one of his sisters to hug! What will Onii-chan do when faced with this sudden and weighty responsibility?

[From JAST Store]