Thank you for playing!
The crash bug has been reported and detailed on the game page description. I’ve located it and will be pushing a postjam fix alongside some optimizations and visual effects.
I did foresee that bullet visibility may be an issue which is why background opacity setting exists, it’s good to see it was a necessary option after all - and accessibility is an important concern of mine so I’m happy to see you liked it!
Arcade Mode is definitely meant to emit a faster pace and stage progression than Touhou which is reminiscent of older and less forgiving retro shoot-em-ups. However, I’m balancing it and also Gentle to appeal to bigger audiences.
The original concept had longer dialogue which details the characters’ relationships and dynamic a bit more, but time constraints scrapped that. I’ll probably implement it in the future.
Once again, thank you very much!