Wow I got so engrossed in the game I didn't realize 2 hours had passed already!
It takes some time to learn the skills, strengths and weaknesses of each talent, but it gets better as time goes by.
The game ended up crashing at turn 81, not sure what happened. I tried to attack an enemy but I had also lost like 5 units already and respawned 4 of them or so during the game, maybe it's related to that?
If it helps, my team was: Sora (respawned), Matsuri (respawned), Pekora, Miko, Mio, Choco, Suisei (crashed when I tried to attack with her at start of my turn), Rushia, Flare (dead), Subaru (dead), FBK (dead), Korone (dead), Ayame (dead).
It's funny that I had Choco block 3 enemies from coming through by standing between two mountains and fortifying. The AI just kept moving back and forth and never going past her lol.
Good job on the game and I can't wait to see what next! :D