https://www.dlsite.com/maniax/work/=/product_id/RJ345862.html

I don't understand this series. It's never sex just fingering and rubbing

Base +4, Furryconst -6, TUTFH -6, chero666 +6, lowlife2828 -6, MelmothTheWanderer -30, royale -6, NSTRX -6, 林瞳阳 -8, Kirby -7, lishang_ -6

Well, it said to be continued there... so, I guess there will be some "action" on next part.

Base +6

很喜欢这种无插入露出的题材，这样的ntr情节我也能接受了，That's the exhibitionism essence

Base +2, TUTFH -6, Kirby +7, dust100111 +4

@KiraKiraHaru
It said to be continued every vol in the series, and no more "action" than fingering and rubbing

Base +12

Just finished the whole series. First thing first, I like the way there's no sex or penetration as the theme is about female exhibitionist learner.
But somehow it's quite strange to see every male in this manga become a gentleman, except sex, only fingering, rubbing and oral job.
I mean, hey there's a naked woman out there willing to do almost every filthy thing you asked......anyway.

Base +6, VAC +6