Butt training...girls don't wear pants / Close-pair training with no panties / 尻トレ女子はパンツをはかない!~だから挿入っても無罪でしょ?
Rank: 311th, it has 15302 monthly / 15466 total views.
Authors: Taroimo / Taroimo
Genres: Manga / Seinen / Ecchi / Mature / Smut
Status: Ongoing
Summary:
My childhood friend believed my lie and showed up for the training seminar without wearing panties, which totally aroused me... And when we stuck to each other, my dick slipped into her sleek entrance...!?
Resources:
https://coolmic.me/titles/258 (English)
https://sp.comics.mecha.cc/books/127355 (Japanese)