Ushio Tsuzuki is a talented stop-motion animator known for creating award-winning short films. He first garnered attention during vocational school through his stop-motion animation videos. His career includes multiple awards, though he expresses discomfort with interviews, preferring simply to return home for dinner and sleep after ceremonies. His most popular work, a short film depicting a baby bird's life cycle from leaving the nest to death, accumulated over 10 million views worldwide.

He possesses brown eyes, short brown hair, and is described as tall, handsome, with good features. His grandmother appreciated shiny objects and would have been pleased by his award trophies.

A significant event occurs when a bicycle accident at a grocery store injures his wrist. During his recovery, he encounters Kei Kunieda, a popular television host, who assists him. Kei initially uses the alias "Owari" to conceal his true identity and off-camera personality.

Despite this deception involving the false name, Ushio develops genuine feelings for Kei based on his authentic behavior during their time together. He comes to appreciate Kei for his true self, separate from his polished on-screen persona, creating emotional complexity as Kei struggles with his feelings and the challenge of maintaining his secret.

Ushio's role extends beyond his professional achievements into his personal relationships, where his acceptance of Kei's real personality becomes central to their evolving connection. His background as an animator and experiences in building a relationship under unusual circumstances shape his character journey.