部屋にあいた覗き穴からいつも妹を観察している引きこもりのボク。だけどある日、彼氏とエッチ中の妹はボクと目が合うと余計に感じ始めて…？
I'm A Shut-In, And I Spend All Day Observing My Little Sister Through The Peeping Hole In My Room. But One Day, As I Watched Her And Her Boyfriend Fucking, Our Eyes Met, And That Got Her Even Hornier...?
