I must say, I am quite pleased greatly saddened by the almost total lack of smut for Ganju/Hanatarou.  I mean really, they obviously like each other a lot.  They may even be in love.  They have so much really blatant subtext, they're practically a canon couple.  But they'd never have sex!  Never ever!  Hana's so sweet and innocent, he probably has no clue what sex is.  He's a damn medic, for crying out loud!  surely he knows the facts of life by now, at least from a medical viewpoint.  
Even if they did have sex, Hana would never initiate it, he's far too shy and quiet.  That's true, actually.  But his shyness may be exceeded by Ganju's awkwardness.  And it would only ever be soft, sweet, gentle, blushing virgin sex.  Because they would never, ever go at it enough to actually get used to touching each other.  Ew!  That would be sick and wrong and hot!  

So yeah, I'm disappointed glad that the fandom has doomed them to eternal virginity and awkward hugs preserved their chastity and innocence.