Best sex scene in all of hentai manga I've ever read, period.
The "action progression" being slower than most hentais, nice.
Awkward atmosphere, but they get through it together, very lovely.
Stripping each other over multiple panels, but not completly, erotic.
The characters having close bond and buildup over many chapters, very important.
Sublime art, a staple at this point.
2 chapters long H-scene, yes please, though a double issue would work too.
Character development and story progression in my h-scene, perhaps.