Hailing from Fairyland, Sei is a male parakeet and Ma-Pet entrusted with finding and aiding the future Snow White Princess. His charge is Ringo Yukimori, a girl chosen to embody this legendary role. Sporting blue and yellow plumage, eyes that shift mysteriously, and the signature Ma-Pet crimson cheek blushes, Sei conceals his magical purpose in the human world by posing as an ordinary parrot, unnoticed by Ringo’s family. Yet he secretly wields magic while guiding her, balancing avian camouflage with clandestine mentorship.

A natural leader, he orchestrates missions with fellow Ma-Pets Dai and Ryoku, their teamwork forged through years serving the Fairyland Queen. His bond with Ringo thrives in kitchen experiments and strategic planning, united by their quest to revive Fairyland. Central to this mission is a pink gem that morphs into a dusky rose heart bracelet on Ringo’s wrist, unlocking her ability to transform into a mature idol persona. Through musical performances, this power channels Happiness Tones—vital energy needed to halt Fairyland’s decay.

At night, he perches by Ringo’s bedside, a constant reminder of their unbreakable alliance. His enduring camaraderie with Dai and Ryoku fuels their covert efforts to mentor three chosen girls while guarding their magical identities. Masters of duality, they execute supernatural duties while blending into human society, driven by urgency to harvest Happiness Tones before Fairyland’s narratives fade forever.