Some Kaiba Bros Headcanons
These are also considered fic canon.
Mokuba Kaiba:
Likes bright colors. Yellow/gold and greens are his favorite, but he’ll wear any and every color.
His bedroom is an absolute disaster zone. Aside from his desk, which is kept mostly clean so he can do homework on it, there are clothes and random stuff scattered all over the place. At its absolute worst, there are three small paths going around the mess. One from the door to his bed, one from the bed/door to the closet/dresser, and one leading to his bathroom.
Seto makes Mokuba take care of his own space. Anytime he goes through and completely straightens his room 100%, it usually only lasts about a week or two before the stuff-apocalypse occurs again.
Hyozanryu is his favorite dragon, outside Seto’s BEWDs.
He wore a suit once, when he asked to join Seto on an important business meeting abroad. He absolutely hated it, and counted down the minutes to get back to the hotel so he could change into his jeans and sneakers.
Enjoys party games and has brought a game system to Yugi’s on more than one occasion for them all to play together. It’s easier for Yugi’s friends to make it to the Game Shop than the mansion.
Has his own office space at KC to do homework or sit around and wait for Seto to finish work. Sometimes he’ll help with game debugging if the development teams have something for him to test.
When his brother is clearly taking too long to finish up for the day, or if he just gets bored, he’ll get onto his company laptop and prank the network. They’re always completely harmless, and easily fixed within minutes. The last one changed the desktop wallpapers on every computer in the building to Kuribohs dancing to the Hamster Dance. While a number of executives find it highly immature, the few minutes of laughter around the building help relieve the office tension.
Seto Kaiba:
Favorite color is blue (naturally), and preferably darker hues.
HATES the color red. It reminds him of both Pegasus and Gozaburo. There’s nothing in his closet or private spaces in that color. The only exception to that is the lining of his Battle City coat, but that’s more burgundy than red.
Most of his clothes are in blues or shades of grey. Mokuba thinks its boring. Seto’s response is that Mokuba wears enough bright colors for the both of them.
His bedroom is the darkest room in the mansion. He gets so little rest that if the room isn’t pitch black (or close enough to it) when he wants to sleep, it isn’t going to happen. The curtains on the windows are a midnight blue, and even in the daytime, light doesn’t pass through easily, and they’re always kept closed.
In contrast, his study has the same curtains in it, but those are always open.
(Post KC Grand Championship) Seto has stopped wearing his trench coats to work. Most of the employees that interact with him on a daily basis came up with an unofficial system based on his clothes to gauge how moody their boss is when the day begins, and used that as a guide to how well (or terrible) the day is about to go.**White suit? He’s in a decent mood.**Grey suit? Eh. Neutral. Could go either way.**Black suit? Depending on what’s worn with it - approach with caution.The one day he wore all black, broken only by a navy tie, the only person that dared go near him was Roland. It probably didn’t help that Pegasus had visited the office that day. All day.
Jet-lag not counted, the longest he’s ever stayed in bed at any one time was almost 24 hours, and that was only because he had been running on no rest for four straight days and his body finally gave out. Knowing his brother is a light sleeper, when Seto goes into‘hibernation mode’, Mokuba makes sure any noise in the mansion is kept to an absolute minimum and turns his phone completely off so no matter what odd time of the day it is that Seto went to bed, he wouldn’t be disturbed.
When building their American HQ in New York City, Mokuba thought it would be neat to have a penthouse apartment built at the top of the tower. He only backpedaled when Seto was all for the idea because that meant he wouldn’t have to stop working to go home. After all, home would be just upstairs! So instead, they purchased a townhouse in an expensive neighborhood on the opposite end of the city from their new office space. Seto let Mokuba pick and out decorate the place, within reason.The only two rooms he wasn’t allowed to touch were Seto’s bedroom and home office.
