Kyoro-chan

Fuente: AniList

While exploring ruins on Angel Island, a doctor finds a myserious newborn bird called Kyoro-chan. Together they form a bond and decide to travel the world together. Three years later when the Doctor and Kyoro-chan try to return to Angel Island they become shipwrecked from a storm. Kyoro-chan was able to make it safely to the island but the Doctor was nowhere to be found. Kyoro-chan prays for his safety and hope he returns as he now starts his new life on Angel Island.