Mite Minu Furi Wa, Tsumi Desuka?見て見ぬふりは、罪ですか？; Is it a sin to turn a blind eye?

Angry voices and the cries of a girl can be heard from Room 502, on the floor above the room where I live. On television, tragic news reports are being broadcast about small children whose precious lives have been taken away by abuse. What if a similar tragedy is happening in Room 502? I may be the only one who can save the girl