Digimon: The Crest of Kindness

Four years before the main story of the original Digimon Adventure begins, Yuan Xinyi transmigrates into its world. During the "Koromon Incident," also known as the "Hikarigaoka Incident," he becomes one of the Chosen Children and the bearer of the Crest of Kindness. Partner: Popomon (the Leomon line).

Well, Digimon Tri has rekindled my enthusiasm. I'll do my best to fill in the gaps.