Digimon Tamers (2001)

S1E2 Digimon, Digimon Everywhere

Takato quietly brings Guilmon into his home, but while he's occupied, Rika, a skilled digimon tamer, and her partner Renamon effortlessly take down a Goblimon. When Takato heads off to school, he leaves Guilmon behind, only for Guilmon to trail after him and create havoc on campus. Feeling inadequate compared to his friend Henry and his digimon Terriermon, Takato worries he doesn't deserve Guilmon. As he searches for a safe spot for his digimon, Takato and Guilmon suddenly find themselves confronted by Rika and Renamon.