Imouto No Naka [English, 213 pictures], by Brother Pierrot
OH FUCK YEAH!!
Here is a quality hentai manga, entirely focused on sisters loving their onii-chan and having lots of sex with him. The sisters will be in various roles and positions, sometimes dominant, sometimes dominated, sometimes comedy partner, sometimes loved, sometimes just mutually horny… At the very least, all the time, it’s a mutual caring and liking situation. Simple, and efficient =)
The art is also the simple and efficient style. The girls are busty, meaty, sometimes almost plump, with very very little censorship. Oral, vaginal sex, mostly, with bits of this and that occasionally (like anal or DP).
I fear my description may not make the manga justice. Check it out, it’s good!
Side note: I didnd’t tag the manga as “comedy” because none of the chapters was designed for comical purpose, and the comic relief pages weren’t numerous. But… still… OH MY GOD, check page 124