Continuing my ZTK headcannon.
THEY ARE related to Kyouka and Goka.
Zanka has a strained relationship like in the cannon with the older two. He gets irrationally anxious at the mention of them considering he's the first giver out of the five. Goka especially didn't like it but brushed it off because of the young two siblings. That is until they also became givers.
Kyouka wasn't very fond of the younger three becoming givers but let Teru and Kou slide. They had trained to become family exorcists and carried their weapons around alot so it was more acceptable.
Zanka's training for Teru was hard but not unbearable. Only because of how Kyouka trained him. So when Teru learned of this he sought her out in order to gain a better sense of guidance on how to train Kou.
Kou isn't so fond of either of the older two siblings so he more so interacts with only Teru and Zanka. They feel closer and not just in age. Every once in a while he does sneak to watch the eldest two train because he still admires their resilience despite the slight dislike because of the difference in abilities.
Teru is the bridge between all of the siblings. Zanka acts like the tough love compliments disguised as insults annoy him but he gets just as happy when he hears them on the inside like when Enjin compliments him.
What yall think?
