The scene is caused by a third party, but there is consent from the girls involved. (Ex: A guy asking 2 girls to kiss.)
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Rating: 4
2 girls have lesbian sex with the FMC while the MC watches, but eventually he joins in for most of the rest of the chapter.
At the very end, the MC gets ready to leave and the 3 girls continue to have lesbian sex with each other while he watches.
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Rating: 2
During an orgy, 2 of the FMC’s have lesbian sex with each other while the MC is having sex with the other 2 girls.
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Rating: 3
The 2 FMC’s grope and tease each other for a while in front of the MC before he eventually joins them for a threesome.
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Rating: 3
2 of the girls play around with each other for a while in front of a group of men, but eventually 1 of the men joins them.
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Rating: 4
The 2 FMC’s of the chapter have lesbian sex while the MC watches.
At the end of the chapter, it becomes a threesome.
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Rating: 2
The MC has 2 of the girls grope and tease another girl in front of a group of people.
Eventually he joins in as well.
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Rating: 4
The MC has Shelly and Jenna make out and begin to have lesbian sex with each other before he joins them for a threesome.
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Rating: 5
Sayaka and Matsuri have a girls night at home with Ayumi and Kaho, but they decide to let the MC join them. They begin with some drinking games.
Sayaka suggests the “Nipple Guessing Game” because she wants an excuse to touch Ayumi’s breasts.
They then switch to the “King Game” and the 1st command ended with Matsuri and Kaho making out with each other.
The next task was for Ayumi to endure Sayaka “tickling” her for 30 seconds. But in reality it was just another excuse to grope her body.
At the end of Ch. 10, all of the girls claim they were so drunk that they don’t remember what happened this night.
I have this tagged as No Male because during a majority of the games they play, the MC just observes them happening, he doesn’t join in until the game they’re playing prompts him to.
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Rating: 3
Haley and Emily have lesbian sex with each other, per the MC’s request.
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Rating: 3
The MC sees multiple girls having lesbian sex with each other.
This whole scene is an astral projection, so I’m not sure if it qualifies for the Imagination tag or not.