The scene takes place while the girls involved are taking a shower or bath.
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Rating: 5
Mayu cheats on her boyfriend with Kokone and possibly becomes a lesbian afterwards.
At the end of the chapter, they’re seen holding hands and flirting/joking about whether this was a one-time affair or the possibility of continuing their relationship.
That being said, Kokone never shows up again in the story, so it’s up to interpretation.
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Rating: 5
At the start of the chapter, Nami and Yumi reminisce about how they used to have sex with each other all the time back in high school.
Since they just had their first threesome together, they talk about how they should go back to how they were in those days. So they start making out in a park, and then go home to have sex with each other for the rest of the chapter.