High School DxD: With Friends Like His... (Feb. Patreon Prompt) (Patreon)

From Omegalock:  "Issei is reminded by Motohama and Matsuda of a deal they made where the first one to get a girlfriend has to share her at least once with the others. Issei reluctantly honors it and Rias is not happy, she agrees but doesn’t want Issei to see her do it. In private with the duo, she slowly finds herself enjoying the experience."

Really, that sums it up best, I don't feel I can add to the description. XD

On another note, the voting for this month's prompts will be occurring next week, likely Tuesday or Wednesday. Also, expect to see the Patreon audio going up early in the week! Excited to finally let you guys hear it. :)