Senran Kagura, the booby 3DS game, isn’t only doing a product collaboration with adult goods store Akahige Pharmacy. It also has its own idol unit, Senran Kagura G-Feed.
https://kotaku.com/when-you-need-help-getting-it-up-452568389
Curvy bikini pin-ups Chiaki Kyan, Maria Tainaka, Imao, Tsumi Kanna, and Mitsue Saitoh comprise the group, which dress in skimpy sheer-through outfits and dance.
Regular Kotaku readers will know Imao as a model who previously covered her face with an anime mask.
https://kotaku.com/who-was-that-masked-model-5720197
PRユニット「閃乱カグラ G-FEED」結成！ マーベラス、3DS「閃乱カグラ −少女達の真影−」 [Inside Games, Game Impress Watch]
