The Protagonist in this story and the only character who isn't a futanari.

Searching for a new form of stimulation, she's invited to join the Futa Club as a service member by Sumika Oohashi. Despite being delegated to the status of the Futa Clubs's dick sleeve, she's more than satisfied with that.

(Source: AniDB)

Niimura Akane is a well-liked girl who has been taken to join the Futa Club as someone who is responsible for "service duty". However, she must pass the entrance test first. Some members are a little bigger than she initially anticipated, but there are some people who are anxious that she is more of a challenge. So began daily events with four futanari in the club. 
 
(Source: Translated and Edited from Nekopoi)

A relaxing vacation at the Manra Valley onsen is just what the members of the Futabu, or Futanari Club, signed up for. Officially, their goal is to research the harvest festival native to the area for a high school project. Unofficially, they're there to have a little fun, and the springs are an aphrodisiac...


Adapts the following from Futabu! Mix: 
Futabu! Karada Sokutei! 
Koi to Chinpo no Kawa to 
Aru Ojou-sama no Asa 
Kaiketsu! Yuuko-sensei

1-6. Futabu! (ふた部！); Comic Revolution 37, Futaket 03, Sunshine Creation 34, Comic Market 73, 77, 80 
7. Futabu! Karada Sokutei! (ふた部！身体測定！); kakioroshi 
8. Koi to Chinpo no Kawa to (恋とちんぽの皮と); Futanarikko no Sekai 4 
9. Futaimo (ふたいも); Futanarikko LOVE 12 
10. Konna Yoru ni Akuma wa Kuru (こんな夜に悪魔は来る); Futanarikko LOVE 8 
11. Aru Ojou-sama no Asa (或るお嬢様の朝); Futanarikko LOVE 5 
12. Kaiketsu! Yuuko-sensei (解決！ゆうこ先生); Futanarikko LOVE 4

Akane Niimura