: A powerful martial artist suffering from Zonapha Syndrome , a bizarre illness that restricts his breathing unless he can make people laugh. He acts as Masaru's protector early on.
: A mysterious, silver-haired woman who controls the powerful puppet Arlequin . She was tasked with protecting Masaru and has a deep, centuries-old connection to the Saiga family's secrets. The Lore of Puppets and Alchemy Karakuri Circus
The series revolves around a 200-year-old conflict originating with two brothers, , who traveled to Prague to study alchemy and puppetry. : A powerful martial artist suffering from Zonapha