[quote=@harinezumikouken]
I'm also curious about a Shiro x Gren pairing.

Shiro would be top though. Gren would be the sub. Hue. I mean, he's a sweet guy. Flowers and baked goods? Come on, what a pal.
[/quote]

If he's subbing, it's only because he's concerned of putting his 250lb+ body underneath anything that isn't made of steel and lots of lubricant. Of course he does do a fine job as a rocking horse...