Just like the prequel (Flat 37c), this one's about the perverted relationship between teens. There's a good element of romance, with a bit of drama but this is a hentai so there's only so much that you can expect out of this manga.

1. (はじまりのはじまり)
2. (引力)
3. (キレツ)
4. (罪)
5. (イビツな三角形)
6. (ホントウノキモチ)
7. (～♭37℃～)
8. (太陽の季節)