Shiki is an interesting character. She is in love with Shinoha and is willing to take that to her grave. Most likely her face is an attribute of her powers, but why did she have to bury her love? In fact, the ironic thing is that love for Shinoha led to more irrational decisions. She wants to protect that smile, the smile that Kiwami gave him. It makes sense with everything Shinoha has been through; you don’t want to make him go through more. At the very least her love for Shinoha is on display, and she didn’t bury it.
It’s rather interesting to see the effect that Hiroki has had on members of his former gang. He gave them a place to belong in high school, while here they allowed them to escape their shitty adult lives. For him, he was a hero, but of course that could be very far from what he is actually doing for them.
Zanzou the leader of the ninja, is very interesting. He clearly has a lot of empathy since he was a big fan of Hiroi. But, man, he knew how to mentally fuck him up, making him remember the painful past of a fan who died after he lied about a promise that would save him. Of course baseball can’t save anyone.