Chiyo Mizuki

The daughter of the famous Mitsuki family, who is famous in the area where the main character lives.
She is a talented and athletic woman who is busy with her studies and lessons.
She fell in love with subculture because of her suffocation and inconvenience in her daily life, and awoke to her cosplay hobby.
She especially loves her masterpiece "Time's Aegis -Another Mission-", which was broadcast in her past and is known to those in the know, and she likes the cosplay of her heroine, Hiiragi Reese.

However, all my friends are young ladies.
I didn't have any acquaintances who were interested in subculture and could share my hobbies, so I took the initiative to participate in the event for the first time in my own costume.
There she had a fateful encounter with the main character.