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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Timestamps: 03:16-06:15 (No Male) / 06:16-08:25 (Male Joins)
Rating: 5
Chiba seduces Nanashi while they’re washing each other and end up having lesbian sex while the MC spies on them from afar.
Eventually, the MC joins and the scene becomes a threesome.
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Rating: 4
2 of the FMC’s have lesbian sex in front of the MC before inviting him to join for a threesome.
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Rating: 5
Continued immediately from the last chapter, after Mary and the MC explain what happened, Philia lets the MC have sex with Mary as an apology, but Philia stays involved the whole time.