If the scene starts as fully yuri, but eventually a male comes in and joins them. (The “Male Involved” tag is only used if the male is involved from the beginning of the scene.)
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Rating: 2
The FMC goes to the club with Kim Joori.
They dance together and Kim Joori gropes her again.
Eventually she stops and a bunch of guys join in.
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Rating: 5
The 2 FMC’s have lesbian sex before the MC joins in.
They’re both sisters and the MC just found that out at the end of Ch. 5.
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Rating: 4
The MC has another threesome with Hyun-Mi and Su-Hyun.
In Chapter 66, Su-Hyun puts on a strap-on and briefly has lesbian sex with Hyun-Mi before the MC rejoins again.
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Rating: 5
The MC has a threesome with Ruri and the Manager (Ruri’s mother).
During so, the MC has them both make out with each other before continuing on with the threesome.
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Rating: 2
Gyeong-Eun takes the MC to the club she owns and gropes one of the girls right in front of him.
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Rating: 5
While the MC is having sex with Yu-Mi, he tells Na-Yeon and Gyeong-Eun to have lesbian sex with each other.
The MC joins them for a little bit, but a majority of the scene is them having lesbian sex with each other.
This continues into the Next Scene, where Na-Yeon and Gyeong-Eun join Yu-Mi and the MC for an FFFM Foursome.
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Rating: 4
Yu-Mi briefly seduces and has lesbian sex with Na-Yeon in front of the MC (mostly off-screen) before he joins in with them for a threesome.
(I put the Cheating tag here because I can’t remember if Yu-Mi’s husband was cool with her sleeping around yet or not.)
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Rating: 3
Nagi and Kaori give each other massages that get kind of erotic. The MC is spying the whole time and then he joins in at the end.
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Rating: 4
MC comes home to find his wife making out with the other FMC. It proceeds into the MC recording them have lesbian sex, but then they invite him to join for a threesome. There’s a lot of yuri moments in the threesome as well.
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Rating: 3
Himari has an imagination about Aoi groping her before the MC comes and joins them for a threesome.