[鉛棒なよなよ] 開かずの間 〜月夜に濡れる義姉の肌〜 [Webコミックトウテツ Vol.27]

jaja granny was proud xD

Thanks for summary

Story is basically about this family who owns this japanese inn. MC is the little brother who has no function to the family since his big bro and his soon-to-be-child will be the successor line or something like that. But unfortunately, dude can't get his wife pregnant. So as ordered by the granny, lil bro is to impregnate big bro's wife while he's away. This works perfectly for lil bro who feels inferior to his brother. In the end, he did get her preggy, and big bro is unaware that he isn't the actual father. Nowadays lil bro just peeks at their sex at night but in his mind, he feels a sense of accomplishment that he finally got to outmatch his brother in that one thing big bro can't do.

Seems like Netori of the older brother’s woman

I am so confused, someone wanna tell me what going on?

I am confused who is doing the ntr here? The guys look kind of the same I can't tell