1-4 Puberty Crazies
Sonoko is a somewhat tomboyish girl who's indoctrinated by her friend Yayoi into the joys and ways of having sex... without losing one's virginity.
5-8 A Captain's Job (Captain no Oshigoto)
9 Tokiwagi-san's Fierce Attack★ (Tokiwagi-san no Moukou)
10 Sequel: Tokiwagi-san's Fierce Attack★ (Zoku Tokiwagi-san no Moukou)

TAGS
MALE glasses, schoolboy uniform, swimsuit, swinging, teacher
FEMALE anal, anal intercourse, bloomers, blowjob, collar, focus anal, lingerie, lolicon, mesuiki, nakadashi, rimjob, school swimsuit, schoolgirl uniform, sex toys, sister, twintails, x-ray
MIXED ffm threesome, group, incest, mmf threesome
OTHER story arc, tankoubon, uncensored