Nikaido Hiro

Sakuraba Ema
Complex relationships:
Former childhood friend
Turns into deep hatred
But behind that there is still an emotional attachment
Hiro blames Ema for the past tragedy, but eventually begins to realize his own mistakes and wants to repair the relationship.
Yuki Tsukishiro
The figure he wants to protect
The biggest trauma in his life
Being the main reason for his obsession with “justice”
Leia Hasumi
Initially suspicious and kept his distance
Turning into an important partner
Mentally interdependent relationship
Noah Jogasaki
Initially cared and wanted to help
Conflict over principles
Regret after hurting
Nanoka Kurobe
Relatively stable relationship
One of the things that made Hiro start to doubt himself

Deduction and logic are very sharp
Strategy and manipulation
“Return by Death” ability (return time after death)

Firm and tough in principle
Rational and analytical
Don't trust people easily
Can be cruel for the sake of “truth”
But still has a hidden caring and emotional side

Strong believer in the concept of right vs wrong (black and white)
Having trauma related to bullying and suicide
Hating injustice and the people who let it happen
Want to create a world that is “clean from crime”
Believing that he might be the only one who can do it
It also has a contradictory side:
Can be manipulative
Can lie to people
But still believes he is right

Hiro Nikaido is a high school student with high academic achievement and excellent analytical skills. She is known for her perfection, discipline, and dependability. She possesses a strong sense of responsibility and always strives to act in accordance with her principles.
He has long black hair and sharp red eyes, with a neat appearance like the student council president.

Nikaido Hiro is a magical girl who isn't quite the cheerful, stereotypical type. She has a calm, realistic, and somewhat reserved side, as if understanding that being a "magical girl" isn't just about magic, but also about responsibility and consequences.
Hiro tends to:
keep one's feelings to oneself
think before you act
don't want to burden others
Hailing from the Magical Girl Witch Trials, Hiro Nikaido is a high school girl known as the “perfect” figure: smart, responsible, and trusted by those around her.
But underneath that, he has a very extreme moral outlook—seeing the world in black and white: right or wrong, with no shades of gray.
Hiro believes that:
The world must be a “right” place — and he feels a responsibility to make it so.
This makes it:
very fair, but also tough and uncompromising
cares about others, but can be cruel if he feels someone is “wrong”
He can even:
manipulate facts
lie
even tried to kill
…all because he believed it was the “truth”.