Mizuki Tsujimura is a young female agent for the Ministry of Home Affairs Special Abilities Division. Her main job is to watch over Yukito Ayatsuji and, if needed, stop him from going too far—even if that means taking him out. She is inspired by a movie spy and can use a special ability called "Yesterday's Shadow Tag," which lets her control a strange shadow creature. A dramatic part of her story is her attempt to get revenge on an enemy connected to her mother’s death, showing both her fierce determination and complicated feelings.
Mizuki Tsujimura is a 24-year-old woman.
She is 167 cm tall and weighs 55 kg.
She usually wears a business suit and a scarf around her neck.
Mizuki is dedicated and brave, always ready to act when needed.
She dislikes being lectured, facing problems with no answers, and adults without style.
She is a big fan of spy movies and often whispers the main character’s catchphrase to hype herself up.
She also enjoys hot lattes and spooky documentaries.
Mizuki works for the Ministry of Home Affairs Special Abilities Division as a rookie agent.
Her codename is “4048”.
She was personally recruited by Ango Sakaguchi while still a trainee.
Her mother gave her the same first name, which makes Mizuki feel complicated about their relationship.
"Yesterday's Shadow Tag"
This ability lets Mizuki control a being called the “Shadow Child” under special conditions.
She got the power from her mother.
Her mother ordered the Shadow Child to “kill anyone my daughter tries to kill, and do it before she does,” then passed the ability to Mizuki.
The ability’s name comes from a book by the real-life author Mizuki Tsujimura.
Mizuki is closely connected to Ango Sakaguchi, who pulled her into the agency.
She was specifically assigned to monitor Yukito Ayatsuji and, if something happens, to eliminate him.
Mizuki has mixed feelings toward her mother, partly because they share the same name.
Task to Monitor Ayatsuji
Mizuki’s job is to keep an eye on Yukito Ayatsuji.
She must make sure he doesn’t ignore the government’s orders or cause trouble.
If he becomes a danger to others, her mission is to stop him—even if it’s a last resort.
Tragedy on Prison Island
In the case with “The Engineer,” Mizuki faces the person who supposedly caused her mother’s death during a big incident on Prison Island.
Fueled by anger, she almost kills Kubo, the body double for The Engineer.
But when she faces the real Engineer, Asukai, she solves mysteries just like Ayatsuji would.
Being "Trained" by Ayatsuji
During the Prison Island case, Mizuki injures her leg.
While recovering, she is “trained” by Ayatsuji in a way that leaves her with deep trauma.
Mizuki admires a female main character from a spy movie and often repeats that character’s catchphrase to boost her own courage.
Her blood type is B.
Her birthday is February 29.
She repeats the catchphrase of her favorite female spy movie character to encourage herself.
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