Scene features at least 1 girl fully nude.
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Rating: 4
The FMC gets the other 2 girls to join in on her lesbian escapade and have sex for most of the chapter.
At the end of the chapter, they pretty much get the whole school involved with their lesbian sex.
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Rating: 3
2 of the girls from Ch. 6 have lesbian sex with Suzuka on a crowded train full of men watching, but the men do not join.
After the train scene, the rest of the chapter is an orgy with a different guy, but the tags and rating are just for the first scene.
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Rating: 4
MC walks in on Ookuro-sensei as she was having sex with 2 other girls.