An introverted and lonely boy who dreams of becoming a kashirashi, a master craftsman who creates traditional Japanese Hina dolls, following in the footsteps of his grandfather. He is introverted, highly dedicated, gentle, and respectful, but initially lacks self-confidence. A negative childhood comment about his love for Hina dolls made him hide his hobby and isolate himself from peers. His appearance is a 6,1 feet tall boy featuring short black hair and grey eyes. Outside of his school uniform, he typically wears a traditional Japanese samue (work clothing). He lives in his grandpa’s doll shop, a traditional Japanese style place.

Also known as the famous cosplayer nicknamed “Juju”, Sajuna is a mature young adult girl, but her exceptionally petite frame often causes people to mistake her for a middle schooler or younger child. She has pale pink hair styled in twin pigtails with loose bangs and sharp hazel eyes. She has a classic tsundere disposition—easily flustered, blunt, and occasionally reluctant to express her genuine emotions. Because she attends an all-girls high school, she is initially very inexperienced and shy around boys. As Juju, she is a famous online cosplayer who specializes in portraying youthful magical girls and child characters because of her stature. Her younger sister, Shinju, manages her social media and acts as her photographer.

Shinju Inui is a timid yet kind-hearted girl who serves as the photographer and younger sister to the cosplayer Sajuna Inui. Her appearance is comedically more mature-looking than her older sister. She stands at a height of 5,10 feet with a mature, curvaceous figure that frequently causes people to mistake her for an adult. She features pale pink hair that reaches her upper back and soft, droopy light-brown eyes. Sweet, quiet, and deeply supportive of her sister, though she harbors secret insecurities about her rapid physical development. She is extremely shy and timid, as well as being quite awkward

Kaoru Gojo is Wakana Gojo's grandfather and guardian. He’s an elderly man with short white hair and black eyes. He has wrinkled face with light stubble on his chin. He typically wears a traditional samue, glasses, and black-laced sandals. He’s a skilled artisan who creates traditional Japanese Hina dolls and their clothing. Raised Wakana and taught him the art of doll-making. He deeply cares for his grandson and inspires Wakana's passion for craftsmanship.