Somehow this is different than Day 2...

I honestly have no idea...

Oh, Victuuri. (Yuri Katsuki X Victor Nikiforov)

That's a really cute ship. And it's canon!

Honourable mention:

Honestly, I usually just accept that something is canon or wonder why the heck they are even a thing.

I guess Edward Elric and Winry Rockbell from Fullmetal Alchemist: Brotherhood..

And Alphonse Elric and Mei Chan... also from FMAB...