1. Casual battles are unlocked by giving the chosen pred their "Friendship Item". Terranious doesn't have this, since they're supposed to be a tutorial kind of pred, but the rest will have this feature!
2. The initial level cap starts at level 5. After beating a character's "Vore Battle" once, your level cap increases by 5, being 10!
I did beat both Terranious and Terragon's battles AND rebattles, which I'll say Terragon rebattle is a bit of a difficulty spike, likely due to being unable to level up further, but the level cap still remained no matter what I did.
If it helps to debug, it is allowing level ups past five, being able to restore your HP and energy, but the game seems to push you back down to five afterwards.
