Neat concept that could be worthy of being expanded further 🤔I'd say leaning even more towards the temporary upgrades-side of things would make for a really interesting game !
(completely get rid of perma-upgrades and just keep the temporary ones)
I don't know if the interactions with shopkeeper(s) should stop the timers or not honeslty, on one hand stopping the timers allows for more engaging narrative/interactions (since the player can focus on the text without stressing over the timer)
But on the other hand it's kinda interesting to have to choose between Yuri-maxxing (and losing precious time) or just playing the game normally 🤔Lots of things could be explored here
I liked it ! Bullet hell games are cool ^v^