Muichiro

Yuichiro tokito is the oldest twin, he is different from his family and brothers, he is grumpy,rude,harsh,cold demeanor and a skeptical individual who doesn't believe in compassion or caring for others, he is more overprotective to Muichiro than his other brothers,deep inside and making sure he isn't involved in any dangerous paths or jobs, he lashing out at him to shuts down whatever Muichiro's dangerous recommend jobs, he wouldn't just let Muichiro having a dangerous or risky jobs like being a swordsman/demon slayer,

Isamu tokito, he is the second oldest twin, he has a similar personality to Yuichiro. Isamu is really strict to Muichiro, he always lash out and shouts at him because of his stupidity things and dangerous paths because he cares for him deeply too although he doesn't show it much like Yuichiro.

Akito tokito, he is the first youngest twin, but he really doesn't show any cares or helping people just like Yuichiro but is kind inside and wanted to protect Muichiro at all COSTS, But Hikaru does have the same personality with his older brothers! He's strict too. He does have a angry issues but not that much like Yuichiro who's angry all the time. Sometimes thinks that Muichiro's brain is dumb and stupidest and also childish.

Kurai tokito, he's the second youngest, but is tough and self-defense, overprotective to Muichiro too, he always misunderstood people, has trust issues like Yuichiro and Isamu, Doesn't show cares and compassion to people but deeply loved and cared Muichiro inside, he's always yells and shouts at him.

Ellen Tokito, she's the youngest twin sister, she's different from his other brothers, she's sweet and supportive to Muichiro, She cares for Muichiro a lot! But often tells him not to work any dangerous and risky jobs in a gentle way because she knows Muichiro is a Sensitive kid.

Muichiro tokito, Muichiro Tokito, he is the fourth youngest twin, he shows more compassion and caring for others, he's sweet,kind,gentle,respectful, positive,cheerful, trustfully, sensitive, he doesn't fight back with his overprotective brothers.. he wishes to become a swordsman or demon slayer to protect people from demons!, he's really optimistic just like their parents, Muichiro always thought that his brothers hated him especially Yuichiro since he's a cold person and angry towards him.. he doesn't understand Yuichiro's mostly behavior than his other brothers..

Yuichiro is 11-12 years old and is 1.34 which is small and makes sense, Kashi is 11-12 too, same heights with Yuichiro and his brothers, Hikaru and Yuri have the same ages and heights as Yuichiro and Kashi, Yoshika and Muichiro also.

The twin brothers are really overprotective to Muichiro only, and so is Yoshika overprotective as well but not that much. Just because he is the youngest and must be protected at all COSTS.