Oyatsu no Jikan – Chapter 12 (Farewell Party)

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Rating: 5

This oneshot is about a couple, Jun and Chiyori, whose female friend/coworker, Yukino, is moving to America.

Even though she’s dating Jun, Yukino confesses to Chiyori and asks Jun if she can have sex with her before she leaves.

Jun agrees as long as he can watch, so they go to a hotel so Chiyori and Yukino can have lesbian sex.

After a while, Yukino eventually invites Jun to join as well for a threesome.

Chijoshikousei VS Bouken Danshi – Chapter 4

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Rating: 5

1 of the FMC’s got really turned on from having seen all of the other girls nude and having sex in the previous chapters, so she asks 1 of them to strip so she can see her nude again.

From there it turns into them both getting turned on and having sex with each other.

At the end they claim that since lesbian sex was so much fun that they’ll specialize in it and try to get others to join them.

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.