Soojin knew it by the way Milkis didn't leap toward the cage door the moment she entered the room.

The rat's name is Milkis, like the soda brand??? 🥺 Wait, that's so cute. For anyone who might not be familiar, Milkis is a South Korean soda brand that is like yogurt (or Yakult, if you're familiar) + Sprite. It's like a milky soda, and it has a lot of flavors too. It's so good!