The Girl in the Gray Room is a webtoon by Bong Bong.
The discovery of a nameless girl's corpse. The silence of adults. Secrets held by children. A detective unintentionally unlocks a Pandora's Box of conflicts among the three families of an apartment block on his quest to piece together the truth surrounding the tragic life and gruesome murder of a young girl through the friends who knew her best and the adults who failed her.