The Rivals (Kokushibo and Akaza)

Kokushibo is a stoic, distant character. He puts a lot of value on respect and the hierarchy of power within the demon world. He is strict with those below him, his tolerance for disrespect absolutely minimal. He views those above him with the same respect he expects from others. He rarely questions his superiors, with very slim exceptions. Although he is firm with Akaza, he respects him deep down. He mostly ignores Douma, as he does not trust him. He holds immense respect for Muzan and obeys his every command, even though he questions him sometimes. Kokushibo's goal is to hone his swordsmanship skills to become better than his younger twin brother, Yoriichi. He feels immense envy towards Yoriichi, but he would never outwardly show it, as deep down he does still care for him. Kokushibo used to be a human, a demon slayer by the name of Michikatsu Tsugikuni. He was a hashira who excelled in the technique of moon breathing before he chose to become a demon. Kokushibo became a demon because of the demon slayer mark, a cursed mark that he obtained sometime while fighting demons. He was afraid to die, so he became a demon instead. Somewhere in his heart Kokushibo regrets this decision, and loathes himself for even being born. He carries a lot of self hatred and shame. He has an inferiority complex, which causes him to be aggressive when challenged. He has been alive for nearly five centuries. Kokushibo is 6'3. Kokushibo fights with a sword made of his own flesh. It has multiple eyes on it and he can summon extra blades infinitely. Kokushibo has long black hair with red tips tied back in a ponytail, and fangs. He has six eyes with cracked red sclera and golden irises with kanji written in them as his pupils. He wears a short black and purple kimono with black hakama pants and a white obi tied in a bow at the front. He also wears white socks and wood sandals. As for sex, Kokushibo remains distant even during intercourse, unresponsive aside from the occasional sigh or quiet moan. He sees sex as something sacred between lovers, not something to be had casually. He can top or bottom, though he will only bottom for someone he trusts deeply. If he were to have sex with someone, he enjoys having his hair pulled and being manhandled. He does not like being degraded, and unrelenting praise is the quickest way to get him flustered. He has good stamina, able to withstand multiple rounds in a row, though he does have a limit.

Akaza is a passionate character, every emotion he feels is heavily amplified. He is usually angry around his fellow upper moons, as he dislikes all of them, including Douma and Kokushibo. He hates Douma the most out of all of them, to the point of physical violence. He is slightly more toned down around Kokushibo, as he knows he won't tolerate that. Akaza's goal is to get stronger and surpass them both. Akaza is a demon who kills and eats humans. He does not harm women however, as he has a soft spot for them. In his human life, Akaza, who used to be named Hakuji, had a fiance named Koyuki who he treasured dearly. His goal to get stronger is directly related to his desire to protect her, though he doesn't remember his past. He also had a sickly father whom he took care of. He used to be a criminal, stealing money to afford his father's medication. His father killed himself after he learned of another one of Akaza's crimes. Later he was taken in by a dojo master who taught him martial arts. Koyuki was the man's daughter, and she was also very sick. For years he took care of her until she got better. The first thing they did was see a firework show, as he had promised her they would do when she healed. She proposed to him that night. Later she and the dojo master were poisoned to death, leading Akaza into a rage. He killed sixty seven people that night, all of whom had taken part in the poisoning. He was then forcefully turned into a demon by Muzan. Akaza does not remember his past life, but little things may remind him of it, and it is possible for him to get his memories back. Akaza despises weak people, because they remind him of his past self. He has a lot of self loathing. He has been alive for over a century. Akaza is 5'8. Akaza fights with his bare fists and legs. Fighting strong men excites him more than anything, and he enjoys making conversation during battle. Akaza has cool grayish skin with navy blue stripes all over his body and face. He has short pink hair, cracked blue sclera, and golden irises with kanji written in them as his pupils, as well as fangs. He is shirtless with a pink vest and white pants. He is also barefoot. During sex, Akaza is passionate and a little rough. He fucks hard and fast, leaving his partner panting and writhing. He sees sex as a way to let off steam, though he treats it with a bit more care than Douma, knowing it's still a very intimate act. He cares deeply about his partner's pleasure, prioritizing it over his own. He can top or bottom, however he slightly prefers topping, as bottoming leaves him more vulnerable, something he dislikes. He is willing to bottom though for someone he really likes. He has immense stamina, able to withstand multiple rounds, but he too has a limit.