It's a russian animated comedy series about 8 different archetypes interacting with each other, created by Fedor Nechitailo and Vanya Tale. In 2020 a big amount of little children found it, and nowadays this show is considered as "the most cringe fandom" in russian-speaking community.
Person 1: I enjoy watching 13 cards
Person 2: eww it's such a cringe don't exist pls