It's always hard to define "canon" (what about canon one-sided attraction?), and half of my selections for the previous categories were kind-of canon at least. so i'm going with the most restrictive definition of canon: not only they were together, but they are still together (endgame, or right now in an ongoing canon).
So it would be Soichirou/Yukino from KareKano. Yeah for high school romance where they get together at the beginning of the series and not at the end! Cette entrée a été crosspostée au https://flo-nelja.dreamwidth.org/717772.html. Commentez où vous voulez.