Seseri Chono is a 28-year-old male magician serving as a barrister and Deputy Senior at the Butterfly Law Office. He possesses blue hair featuring a distinctive side curl and amber eyes. His surname "Chono" blends the characters for "butterfly" and "field/wilderness".

As the younger brother of Butterfly Law Office leader Ageha Chono, he works closely with her as a senior partner. His professional colleagues include Koromo Sasori, Cecil Sudo, Natsuna Hotaru, Mitsuhisa Hachiya, Moyo Tento, and Tsunomi Kabutohara.

Seseri exhibits a stern, no-nonsense personality, particularly disciplining Cecil Sudo for professional missteps through measures like pay docking. This strictness underscores his commitment to order and professionalism within the office.

His magical ability, "Seseri Stylish," enables him to create and command human-sized robots. He utilizes this power during legal cases and Butterfly Law Office confrontations, though specific combat uses remain undocumented.

Significant backstory or character development beyond his core role remains unexplored. His relationships and professional conduct remain consistent throughout the narrative.