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Rating: 3
The MC has a threesome with Soobin and Seonjung.
Intern Diver – Chapters 96-98
Tag: Teacher
At least one girl in the scene is a teacher at a school/university/college.
Rankon – Chapter 9
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Rating: 5
The MC has an orgy with every girl that’s appeared in the series.
At 1 point, Yuzu and Rio go have lesbian sex with each other.
At the same time, the 2 coworkers from Ch. 5 have lesbian sex with Ayumu.
Nude Cam Girlfriend – Chapters 23-25
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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.
Kiss of the Dead – Chapter 5
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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.
Lucky Guy – Chapters 52-53
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Rating: 5
Ms. Kang and Yujin stay at a motel together after staying out drinking. After Ms. Kang hears Yujin’s story, they start having sex.
When Ms. Kang wakes up, it briefly shows the sex scene again, implying they had sex all night long.
On the way to school, Ms Kang holds onto Yujin’s arm like they’re a couple.
This has the “Cheating” tag because Ms. Kang does this behind the MC’s back. He does find out at the end of Ch. 53, but he didn’t seem to mind.