If you loved I Can Speak, try C'est Si Bon
A bridge between a film you've already seen and one most people haven't. C'est Si Bon has roughly 3.9× fewer votes than I Can Speak — 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.
What they share
Both films are directed by Kim Hyun-seok, and they both carry the bittersweet, tender mood tags, and they sit in Comedy / Drama territory. If that's the register that drew you to I Can Speak, the second film will land in a comparable space — through a different lens.
bittersweettender
What C'est Si Bon is
A socialite stumbles into a trio of feuding musicians who rediscover harmony while wooing her. The results are chart-toppers and nocturnal misadventures. They definitely didn’t rehearse the broken elevators.

