Aniki no Yome-san nara, Ore ni Hamerarete Hiihii Itteru Tokoro Da yo

Based on the erotic game by Orcsoft.

Two respected older brothers.
Two beautiful, virtuous wives.
The younger brother, a horndog who salivates at the chance to taste those wives.

He is you. Circumstances put you between the thighs of your respects brothers' off-limit wives while you share a life under one roof, dense pheromones an invitation to bump uglies nnghh nhggh hnnnf HNNFF!!

Your brothers' wives crave satisfaction that your d*ck supplies in spades. This is a cuckolding story full of raunch!

(Source: DLsite English)