How do they get along with the main 4?
Obi:Of the four, he is the one he knows best. Koa and Obi used to work together when they were both under their respective contracts, so they saw each other a lot. They initially tried to kill each other, but neither succeeded, creating a sort of mutual enemies/friends relationship. It could be said that Koa learned about emotions by watching Obi; he considered him stupid and a crybaby, but he wondered how someone like that managed to be strong anyway.
Savira:Savira saved his life once, and from that moment on, Koa experienced an emotional crisis. Why would she save him when he was most vulnerable? She could have killed him and ended a plague like him, but she didn't. Why didn't she? In that way, Savira became the only person for whom Koa truly felt gratitude and kindness.
I have a headcanon that Koa was the one who later saved Savira after her fight with Veldren, in which she lost her voice. As if he arrived after Veldren had left, and Koa arrived later to do what she had done for him long ago: save her and help her.
Noah: He recognizes him from the memories Obi once shared. He doesn't know what to think, but he'll pretend to dislike him for fun.but it doesn't matter; to koa:noah is a fool who has a soft spot for a crybaby (Obi).
Veldren:He hates him. Not only for what he did to Savira, but because it was precisely Veldren who almost killed him and ripped out his Spiky. He desires revenge and doesn't understand how such a vile creature can be forgiven so easily. He knows that, like the rest, he too was used. But Koa has the mistaken idea that Veldren enjoyed the weakness of his victims, something that, in Koa's eyes, is repugnant if it were done to him (#Koa hypocrite)
Noah:they knows him quite well; they came into Scarlet's hands at the same time as him, so they know each other well. Their relationship is that of a very good friend/mentor apprentice, since prior to the Black Opal detonation, Opal was already manufacturing weapons for Noah and 09 (the Cerulean from the comics).
Obi:Noah used to talk about Obi occasionally, so like 09, they has some idea of what he's like. They think he's a good guy! A very elusive one, but they like and support him.
Savira:A very good acquaintance, she used to frequent they flower shop from time to time. Occasionally they talk about work and the past. They like her and find it nice to talk to her.
Veldren:"Besides being terrifying and ugly, he's boring. I can't stand him, but I recognize that, like everyone else, he regrets his actions." In opal words. It bothers them, but they has hope in him, somehow.
Here's the chart I made. Honestly, I only put "love" because I couldn't think of anything else XD
