Tantei Mushi Megane ~ Saraba Kaijin 256 Mensō (探偵むしめがね～さらば怪人256面相)

Tantei Mushi Megane ~ Saraba Kaijin 256 Mensō is Bucchigiri-P's second single. It features Kagamine Len with GUMI and Camui Gackpo. It was released for KarenT's event celebrating Rin and Len's birthday.