lilsbubu ₊˚⋆

He and Azul are fully biological brothers, but Cetus moved further north with their father after the divorce at 6-7 years old because their parents thought that if one of them had to go, it would be better for it to be their younger child. Since he has less memories and isn't as 'rooted' in the environment as the older one- if they had known Azul was getting bullied, they would have sent Azul away instead. They lose contact after like a year and basically forget about each other until Cetus arrives as a 1st year.

One of the last interactions they ever had before they were split was after Cetus was confronted at school by some older boys (Azul's bullies) with the intent of bullying him, too. He didn't really get it, specifically asking what was wrong with being 'Azul's/Octotwerp/etc's brother', and they got bored of him because he wasn't giving them the reaction they had hoped. Cetus would end up asking Azul in private what was wrong with that, and why they were saying such things about him, to which Azul freaked out and made him swear to never, ever tell their parents about it.

On the night of the ceremony, though, neither even remember each other. Azul kind of pretends like "Oh, remember me?" in a way to try and measure how much Cetus himself remembers. They're civil for like 1 night before intense paranoia grips Azul and he starts micromanaging and taking issue with EVERYTHING about Cetus.

Up to Book 3, Azul goes as far as to double-check Cetus' uniform before school, buttoning up his blazer to look exactly like his. He tried to gel Cetus' hair too but Cetus fought back on that one, so. During the stalking segment in B3, the group would watch Azul leave class and rush to the 1st year's classrooms to pick up Cetus where he roughly pulls and pushes him or keeps him away from speaking to other people. He's doing his all to prevent Cetus from spilling anything, or being ASKED anything because he doesn't trust him.

Cetus didn't have a club until a little before Book 4 or so, because Azul would drag him to shadow him at Board Games Club and basically have him sit to the side like Ortho does.

Because of their non-existent relationship, Cetus doesn't like him back very much either. He actually didn't have any dreams of being on land at all.

This ^ changes after Book 4, where Cetus really gets to see how much Azul has grown through watching Azul's plan come into fruition. He does a bit of a 180 on Azul and becomes a heavy glazer because of it 😭.

Overall their relationship with each other is a very turbulent one but they end up getting very close with time, hehe.

Actual Cetus-only facts:

Cetus was only on land for like... 3 months before coming to NRC. He's using a different service than the octatrio, which isn't a nonprofit. He knows much less than they do.

During Book 4, he's extremely annoying because he doesn't like Yuu and Grim over the contracts thing. He keeps asking Azul to leave at every turn, and Jamil ends up taking advantage of this and locks him up in the treasure room, citing "He must have gotten fed up with being ignored and gone back to Octavinelle on his own. You guys should go, too." and hypnotized Kalim probably forbids them from leaving again to go and check. This ends up working a bit in their favor because Cetus DOES NOT end up getting tossed into the desert like everyone else, and even ends up getting his UM to escape the treasure room, then used to take down Jamil.

He does hate Jamil though.

Cetus, compared to Azul, is very direct and clipped when he speaks. He has a staring problem when he's upset, but he does as told.

Floyd calls him 'Baby Whale' up to Book 7. When they tell Azul that Mostro has been closed, Floyd drops 'Poor Cetus was worried sick," as a tease towards Azul.

He and Azul aren't just supposed to look similar from behind, but he wears the scarf around his neck so that when you chop them both from the torso up (Like in the wiki), they both wear the same colors. They're both heavy on silver in palette up top.