I have seen this pairing around but have not seen serious works with it. By serious I mean a complete book on this pair

sake and gaps don't mix.
quoting my favorite song "let's just be Friends"

Well, given that canonically, Yukari broke a promise with Suika, Suika probably wouldnt be feeling it. Given the whole "no lie" thing. Then again, we have pairings such as Mokou x Kaguya so what do i know.

Tetsamaru said:
Well, given that canonically, Yukari broke a promise with Suika, Suika probably wouldnt be feeling it. Given the whole "no lie" thing. Then again, we have pairings such as Mokou x Kaguya so what do i know.

No room for Canon in Touhou fandom.