Cool concept, I really liked the system where players have 2 health system, real one and time! The character upgrade system is super nice, and the music fits the game really well.
There are a few UX points that aren't super clear in my opinion:
- The turn system (which I assume is on the top timeline) isn't very easy to understand.
- It's a bit unclear where characters can actually attack. On that note, I wish defeated characters would disappear from view it felt like one of my dead characters was blocking the view during the boss fight.
It also could have been cool to have permadeath for the characters.
Great job overall! :D