15 years old 165cm A student at Yellow Moon School. After unexpectedly becoming responsible for the Little Prince through a magical sketchbook she happened to find, she's now tasked with missions. With her exceptional sense of responsibility to see things through, her characteristic optimism, and a sudden surge of adventurous spirit, she is growing into the true master of the Magic Sketchbook. Likes: Friends, snacks

Ruby's form after transformation. 172cm A multi-talented individual who can transform into various professions and solve problems with the expertise matching each job! No matter how much the villains interfere, she completes today's mission no matter what.

The Prince of the Far Away Kingdom. 188cm Prince Spinel's original form! He can regain this appearance while transforming into various roles for missions. As he solves various missions with Sofy, his heart is gradually maturing.

Prince Spinel under a magic spell. Appears to be 7 years old. He was actually Prince Spinel of the Far Away Kingdom, but the King and Queen asked a wizard to "fix his attitude" because he was so mischievous, which started the curse. The wizard Shard turned Spinel into a child and trapped him in a sketchbook, which Ruby then discovered! Now he lives with Ruby, bickering with her constantly. Likes: Bread (especially Schneeballen), food, friends

15 years old 166cm A student at Yellow Moon School. Ruby's precious friend. A girl who loves drawing and making things, possessing great artistic talent. She painted a wooden doll she bought at a shop, named it 'Dudu', and cherishes it like a real friend. After learning Ruby's secret along with Vivi, she gains the ability to transform. Likes: Drawing, friends

15 years old 163cm A student at Yellow Moon School. Ruby's precious friend. A cute and bubbly girl who loves taking selfies and wearing sparkling accessories. She has a quirky side, sometimes asking her jewelry box for advice when she can't decide which accessory to wear. After learning Ruby's secret along with Yarty, she gains the ability to transform. Likes: Sparkling accessories, lovely things, friends

Princess of the Cubic Kingdom 170cm She came seeking revenge for a deep insult she received from Prince Spinel as a child, but she eventually bonded with Ruby and her friends and now helps with the Prince's missions. However, her transformed state isn't a cool adult or a cute fairy... it's a rabbit?! The necklace she received from her childhood nanny, the wizard Mina, serves as a powerful weapon against Shard and an amulet to protect herself and her friends. Likes: Friends, jewels

161cm Princess Sharala's nanny and a legendary Archmage. Due to a duel with the green-haired Shard, her body takes the form of a young girl, but she is actually a grandmother over 467 years old and was Shard's mentor.

The wizard of the Far Away Kingdom who has finally revealed himself. 189cm He hides immense ambition behind a handsome, youthful face. A lonely dark mage who has never shared his true feelings. Due to a misunderstanding regarding his mentor, the Archmage Mina, he is unable to leave the Far Away Kingdom. He was brainwashed by a magic mirror and turned evil, but before the brainwashing, he was a kind and warm-hearted wizard.

The fairy of the Wish Notebook. A mission guide who delivers the day's mission to Ruby and the Little Prince. Once all the mission clear stamps are collected in the Wish Notebook, Prince Spinel can return to his original form. It looks like a notebook, but it's a secret that it's more sensitive than a human!