Tokyo Magnitude 8.0 Wiki

Mirai Onozawa (小野沢 未来, Onozawa Mirai) is the big sister of Yuuki Onozawa. Mirai's name means "future" in Japanese. She is twelve years old and she was in seventh grade just prior to the earthquake hitting Tokyo.

She was voiced by Satomi Hanamura in Japanese and by Luci Christian in English.


It may seem like she doesn't like him and that she thinks he's annoying but she actually really loves him. As seen in several episodes she really does love her younger brother. When her and Yuuki were separated, she was kind of frantic and worried about her brother. During the last episodes, she was so shocked that her brother died she imagined that he was still alive. Overall, Mirai is nice person and loves her brother but can be slightly irritable at times and can have a hard time accepting strangers like Mari.

Official description from the website (translated and wording adjusted):[1]

Mirai is 12 years old and in the first grade of junior high school. She hasn't been getting along with her dual-income parents and is in the midst of a rebellious phase. She has a shy personality and never gives up her cell phone.

Physical appearance[]

Mirai has black eyes and short brown hair. Her attire consists of a green shirt with a button up jacket, a blue skirt with a light blue star, a pink satchel purse and red open toed shoes. Her school uniform is like any other. Its a white shirt with a blue collar that has two white stripes on it, a red bow, a knee length blue skirt, brown shoes, and short black socks.



Main article: Yuuki Onozawa

Yuuki Onozawa is Mirai's younger brother, approximately nine years old based on being in the third grade. She initially views him as an annoyance and an inconvenience due to having to look after him and the nicknames he gave her:

  • "Cellphonian", due to constant use and never being without her cell phone.
  • "Sergeant Snack Time", due to liking snacks a lot.
  • "King of the sleepyheads", due to Mirai often sleeping in until noon.


Main article: Seiji Onozawa

to be added


Main article: Masami Onozawa

to be added

Mari Kusakabe[]

Main article: Mari Kusakabe

to be added


Main article: Mirai Onozawa's classmates

Mirai is friends with several of her classmates, or at least friendly with them, including Mayu, Yuka, . She is especially close with Mayu and Yuka, who sit behind her and to her right, and will plan after-school outings or go over to each others' houses.

Mirai appears to be friendly with other members in her class, such as Megu and Risa, who asked her what plans her family had for summer vacation.


Mirai was not so quick to accept Mari but eventually she did. Mari is the one who helps her look for Yuuki when they got separated after the earthquake occurred. Mirai, Mari, and Yuuki all meet each other several times before the earthquake actually happened and it also appeared that Mari was meant to look out for her and her brother.

Episode appearances[]



Onozawa family: Mirai OnozawaYuuki OnozawaSeiji OnozawaMasami Onozawa
Kusakabe family: Mari KusakabeHina KusakabeReiko KusakabeMari's husband
Mirai and Yuuki's friends: MayuYukaIstukiKento Nonomiya

Others: Aya KawasakiChristel Takigawa


  1. Character descriptions, Retrieved 2021/08/28.