Peephole

穴殺人

After two years as a failed ronin and another as a shut-in, Kurosu Otsuro tries to hang himself, but the cheap wall gives way and opens a hole into the next apartment. Through it he watches his neighbor Rio Miyaichi and falls for her, finding a reason to keep living — until he sees her kill someone. Discovered as a witness, Kurosu is spared by Rio for the moment, and the two become tangled in a fragile pact of attraction and dread.