Scene is very long in length. (Most of the chapter or multiple chapters.)
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Rating: 4
Continued from the previous scene, per the MC’s request, Sohee and Sungeon begin to have lesbian sex with each other.
Eventually the MC joins in with them for a threesome.
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Rating: 4
The MC has an orgy with all 4 of the girls in the club and their advisor/teacher.
At one point, a few of the girls briefly break off to have lesbian sex with each other, but they quickly invite the MC back in.
This chapter has an official translation that you’ll have to look around to find.
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Rating: 3
The MC has a threesome with 1 of the sisters and his teacher.
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Rating: 4
So-Ra joins in on having sex with Joo-Hee and another guy.
The guy leaves pretty much the moment So-Ra joins in and it’s just lesbian sex for the rest of the scene. So I’ll tag this as “No Male,” but he is only there at the start.
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Rating: 4
The MC watches and masturbates to his mom and Ayaka-sensei having lesbian sex with each other, but eventually he actually joins in for a threesome.
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Rating: 4
The MC forces Su-Yun to have lesbian sex with Sun-Ah before joining them for a threesome.
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Rating: 5
Mayumi and Akiko have lesbian sex together again. Eventually the MC walks in on them and joins them.
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Rating: 5
At the start of the chapter, Rika and Shizuka are shown to have a sexual relationship.
Later, while the MC’s recovering, Rika seduces and has sex with Saeko, claiming that it’s not cheating since they’re both girls.
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Rating: 4
The school’s Vice President uses a massager on another girl in front of the MC.
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Rating: 4
Maika has sex with Uta in front of the MC as a show of dominance and to prevent her from having sex with the MC herself.
The MC watches while nude, and Uta’s face gets close to his dick, but he doesn’t join in at any point.