If you loved Digimon Adventure: Last Evolution Kizuna, try Digimon Adventure tri. Part 4: Loss
A bridge between a film you've already seen and one most people haven't. Digimon Adventure tri. Part 4: Loss has roughly 4.9× fewer votes than Digimon Adventure: Last Evolution Kizuna — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.

Digimon Adventure: Last Evolution Kizuna

Digimon Adventure tri. Part 4: Loss
What they share
Theyboth carry the bittersweet, outsider, tender mood tags, and they sit in Action / Adventure / Animation / Fantasy territory. If that's the register that drew you to Digimon Adventure: Last Evolution Kizuna, the second film will land in a comparable space — through a different lens.
What Digimon Adventure tri. Part 4: Loss is
Apparently someone still has a few more digital monsters to battle. The Digidestined are back in the Digital World facing a new threat. It all goes predictably over the top.