NMB48: anal
Any anal stimulation is used.

NMB48 (short for Namba48) is a Japanese all-female idol group based in Namba, Osaka, where they have their own theater, located in the Yes-Namba Building. The group, established in 2010, was the third sister group of AKB48. NMB48 is produced by Akimoto Yasushi and signed under laugh out loud records. Currently the group consists of three teams: Team N, Team M, and Team BII.