RIIZE 3rd Anniversary Celebration

Why Koreans care

집사 (jipsa, a butler; affectionately a cat's human) lets a commenter join the animal metaphor rather than merely watch it. If the idols are cats, their admirers become the people who serve them; the playful role reverses ordinary pet ownership.

In the Korean comments

Fandom, the closing interaction, excerpt: “The way they look at each other at the end is so funny, hahaha.” Fandom, contrasting cat images, excerpt: “They look like a black cat and a ginger cat.”

What the words mean

석과비니코어 (Seok-and-Bini core, their characteristic dynamic) labels the ending as especially typical of the pair. The borrowed core suffix marks a recognizable vibe, not an official unit name or a new genre of choreography.