Scene features something alluding to/implying that 2 or more girls had sex with each other, but the scene doesn’t actually show it.
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Rating: 4
Yuki shows up and offers to “play around” with Okazaki like old times. Okazaki tries to turn her down, but Yuki ignores her and goes to kiss her.
While getting fingered, Okazaki claims she only hooked up with Yuki in the past because she was desperate after a breakup, but Yuki claims she made her feel better than any guy ever could.
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Rating: 1
Lynn grows a penis and turns a group of male bandits into women. She then proceeds to rape all 4 of them as punishment off-screen.
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Rating: 2
At the end of the chapter, Lilliana has sex with Scarlet in front of Daeun off-screen.
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Rating: 3
The MC comes home and finds his wife cheating on him by having sex with the other FMC.
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Rating: 5
Shion has sex with Karen-sensei in order to distract her and take down her barrier, allowing Remi to have sex with the MC.
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Rating: 3
Okada asks Chie to teach her more lewd things.
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Rating: 4
Byeol Jji and Mir Tina have sex with each other.
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Rating: 3
Strong Gore/Death Warning
Nezu rapes Katya with a strap-on that’s filled with acid.
While they’re having sex, Nezu points over to a previous girl that she raped and killed with acid.
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Rating: 4
Momoka gloats to the MC about all the things she’s done with Sachi even though he’s the one that’s dating her.
We then briefly see what happened off-screen during Ch. 11 & 12.
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Rating: 2
In the review chapter, the author talks about the relationships between Na-Yeon, Yeon-Ah and Soo-Yeon and the reasonings for lesbian sex in the series.
He shows off a diagram of his ideal harem relationship, which is for the girls to be involved with each other as well as the MC. This prompts Yeon-Ah to break the 4th wall, saying that Na-Yeon and Soo-Yeon need to have sex with each other.
So it’s just implied the girls have lesbian sex with each other whenever the MC isn’t around.