Coming of Age spoilers so don't read:

>successfully carries out his timetravel plan
>friends: mostly saved (Darumi...)
>genocide: prevented
>sirei: toasted
>Shion: gives his life in a meaningful, human way instead of being used as an object til the end
>Takumi gets to confess
>gets the cutest peck on the forehead
>Nozomi's smile: protected
>Nozomi's eggs: fertilized
aside from the handhold Dragon Ball powerup at the end, CoA was my first route and now that I've finished the game, my favorite