I know I might be crazy but I'm gonna get this out of the way. It's not impossible that at least one or two Riot employees know what Touhou is.
My first clue was Youmuu's Ghostblade.

Strangely coincidental to the Yomuu every touhou fan is familiar with.

Yomuu Konpaku a half ghost half human hybrid that uses katanas as a main weapon.

Not very many clues for me but there is a second.

Wriggle's Lantern... now that could be ambiguous but I like to think that Wriggle Nightbug a lightning bug type character in touhou may have been the inspiration for such an item.

Now I may be hated on for my post and I may not be but...

What I am trying to get at is if there is in fact some sort of touhou fan in the Riot headquarters I would like to request a skin for our own magical girl Annie. A touhou based skin that I think most fitting would be that of Flandre Scarlet. I know google is available but I have provided a picture as to the character I am talking about for this skin.

+1 for Scarlet Devil Annie skin.

EDIT: Because we don't need more blonde Annies. -.-

touhou is my favorite anime

do we really need moar blonde annies?

It's been kind of obvious there's been Touhou references. As soon as I saw Youmu's, I was like, yep, someone's a fan lol.

Same with Wriggle's.

^ he has no idea what he is talking about ^

also he plays revive eve

I've never played Touhou is Sephiroth in it

Well duh