Kaikan Change – Chapter 5

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Rating: 5

While the MC is inside the FMC’s body, he takes a bath with her friends. The FMC’s friends are completely unaware about the body switching.

While they’re showing off/comparing their bodies, they start to get turned on and curious about having sex with another girl, so they begin to have a threesome together.

Still unaware that the MC is in the FMC’s body, he tries to say that it would be cheating, but the other 2 girls tell him it’s just a “little friendly play between girls.”

InCha na Ore ga Madougu o Tsukatte Share House de Harem o Tsukutte Mita. – Chapter 13

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Rating: 4

While the MC is having sex with Shieri, Rin and Ann briefly join in by groping Shieri.

While they’re sucking on her breasts, 1 of them mentions how they did this all the time in the past, implying they’ve had lesbian threesomes before.

Eventually Rin and Ann stop to just have lesbian sex with each other in the background.

So I’m gonna tag this as Male Involved, but the MC doesn’t do anything with Rin and Ann after they leave to have lesbian sex.

My Wife Started Experimenting – Chapter 4

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Rating: 4

At the start of the chapters, while Erika and Ai are taking a bath together, Erika starts groping Ai’s breasts.

After the bath, Erika and Emma watch as the MC has a threesome with Mei and Ai. Near the end, Mei briefly makes out with Emma while still having sex with the MC.

The rest of the chapter is the MC having an orgy with all 4 of them.

At one point, Ai puts on a strap-on to have sex with the other girls.