Sadly, no -- technically it's not slash (WOE). But! The potential for it is ridiculous, and with the twins, Hikaru and Kaoru, you don't even have to make up the twincest: the series pretty much does it for you. XDDD

Hikaru: "I won't allow it. It's just not fair. I won't let those doctors touch you, Kaoru."

Kaoru: "What are you talking about? You don't seem to have a problem touching me when we play 'doctor' at home. I can't get you to stop tickling me and toying with my body..."

Fangirls: *LOSE THEIR SHIT*

THAT'S AN ACTUAL BIT FROM THE ANIME OMG.