If you loved Saint☆Young Men, try Hetalia: Axis Powers: Paint It, White!
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Theyboth carry the playful mood tag, and they sit in Animation / Comedy territory. If that's the register that drew you to Saint☆Young Men, the second film will land in a comparable space — through a different lens.
playful
What Hetalia: Axis Powers: Paint It, White! is
Some intergalactic paint crew shows up with glow-ball hats and a yen to turn the planet monochrome. A cartoon history squad must temporarily bury historic beef to swab the cosmic slop off the globe. It gave the world a palette cleanser it didn’t ask for.
Ask 
ChatGPT
Claude
Grok
Le Chat
Perplexity
for a deeper bridge
ChatGPTClaudeGrokLe ChatPerplexity