Jiman no Bijinzuma ga Tonari ni Sumu Kimoi Otoko ni Netorareteita no o Boku dake ga Shiranai

自慢の美人妻が隣に住むキモイ男に寝取られていたのを僕だけが知らない, I Was the Only Person Unaware of the Fact That My Disgusting Neighbor Had Cuckolded Me with My Beautiful Wife