• Digimon Adventure (1998) – Contains: Divorced parents who deeply love their children and are willing to put their differences aside for their sake, adopted son learning that his parents really love him and that he really loves them, cool older brother who tells overly-pressured kid to stop trying to meet expectations and go do what makes him happy. (also – Kaiju fights, of course) – Plus, christmas miracle, ALL the family members are alive at the end!

If you’re willing to tank a whole heap of tragedy around the wholesomeness –

Fullmetal Alchemist: Brothehood (and the Manga. Actually I prefer the Manga) is a classic about a pair of brothers who face many difficulties together. It’s really sweet how much they protect each other. Shout out also to their not-sister-childhood-friend for being an honorary third sibling. Then there’s their father, absentee for most of the show, but once he appears he’s fully ready to sacrifice himself for their sake and all that.