Going a little more in-depth here, I really enjoyed all three storylines between each of the other three protagonists, from Nemona finally getting to fight someone on equal footing with her, to Penny being able to meet up with her friends and get saved from expulsion (with the Director growing in understanding about the hidden struggles students face), to Arven's story.
Oh man Arven. He got to save his only family (Mabosstif) and got closure for what happened to his missing parent. At times it really felt like he should be the official main character, and that we, the player, should've been the supporting character in HIS story.
Like, I initially thought he was a bit strange from the first encounter with him, but since I played his route first I quickly realized just how kind he was, and how his life experiences shaped him as a person. Mabosstif was his only family, so he deeply cares for it and would literally search across the region for mystical herbs to heal it. AND. Y'know his skilled cooking abilities? Ever wonder why he's good at it? Well, when you're alone...you can only rely on yourself to put food on the table.
I really felt for these characters, which is more than I can say for some other past rivals and companions. The writing in this game is delightful, and alongside Gen 5's story, I can safely say it's one of my favourites!
TL;DR: All 3 Protags have awesome storylines, and Arven ended up being a deeper character than I initially expected.
THANK YOU FOR READING IF YOU TOOK THE TIME TO DO SO!!! I'm sure to ramble more often if discussions like this are something y'all also enjoy 
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