https://www.melonbooks.co.jp/detail/detail.php?product_id=1747618
Less censorship than the other upload.

This is NTR his gf get stolen and he agreed to swap just for fuck his ex while douche stretched his current gf no way after this current gf gonna still love him its kinda NTR or i am wrong?

Base +3, chengzhipaofan +6, mrweezyer -7, Wessex_Raider_YARGH -5, Coledas Ukgent -3, Trio1 -6, foxworth -16, Jacona +6, Durpingtons -6, MelmothTheWanderer -30, Fshate -6, doncosciadipollo -10, lurkm0ar -6, and 6 more...

画风其实不太喜欢，剧情倒是挺温馨的，但交换怀孕play还挺刺激的，我甚至有点展望续作

Base +8, snokater +5, RONGRUO1 +7, Mecklinger66 +6, 5855dfhj +7, meirie -6, Coledas Ukgent +13

@hiroki-kun; You're completely wrong. This is pure netorase.
There was a part 1 before this: https://e-hentai.org/g/2273007/2b8397f5b4/
In that one the two guys are close childhood friends who shared everything, and the big guy offered to let little guy lose his virginity with his wife. The end up having a m/m/f 3-way after which big guys says to lend him his wife when he gets one in the future. In this one little guy meets a girl introduced to him by his friend's wife, gets married and then brings her round to return the favour.
That's pretty much the whole story.

Base +6, platzbo +9, zspecter00 +6, FappingToTheBeat +6, IssacClarke +9, flash11 +22, roskrad +8, lorenzo123 +7, doncosciadipollo +10, lurkm0ar +6, Fofotron +7, Baalzack +6, Coledas Ukgent +13, and 1 more...