Flip Sides is a story written by Kubaru Suki. It originally ran in Issue 3 at http://s2b2.livejournal.com/7735.html, and is mirrored at http://www.shousetsubangbang.com/mirror/flip-sides/.
From http://cheloya.dreamwidth.org/228440.html: "Saisuke is pretty much Daisetsu's twin. Until he gets tall."
- delicious.com: "AHHH SO ADORABLE!!! The jealousy! The pining! The desperate denial! The looooooveeee! Haha, it really is incredibly endearing, and very sexy, and with just enough flangst to make sure your heart is well and truly ensnared. <3"