I am currently using Ellie as my main since she is the most interesting character for me at the moment. Just got Torri though so maybe her events will win me over.
I'm not sure how much the elements matter though. I assume you could go through the game only using one girl if you wanted.
I stopped right after that boss but I assume I'll have Torri and Feene soon. Mostly been using chloe and serina. Chloe cause uh....dat costume. Serina cause her first big special hits the whole field. Do any of the other girls learn an all enemy hitter quickly like Serina?
Element determines what elemental spells Star Children learn....so there is that. I dunno beyond that.
You get Torri soon but have to wait another chapter for Feene.
Just got one from Torri that's a wind all-enemy hitter.
Apparently in the 4th floor of the first dungeon's VR sim there's a chance of an enemy spawning that looks basically like a bunny and a slime mated. Barely hits for anything and if you kill it you get 1500 XP...holy crap.
Yeah you can get a few of those in the bottom floor of the 2nd dungeon also. The better place to grind them however is the bottom floor of the third sub dungeon (so you have to be in chapter 3) because I believe they are guaranteed to spawn there and last time I was there I think I encountered a total of 4 encounters with 3 each (so 12). I am so grinding them to get all of heroines up to the same level (29 because that is my current overleveled position).