Kokoro "ko-omote": Since I had to memorize emotions logically, I got good at reading the emotions of others. She is currently wearing a "ko-omote: joy" mask, she can change the mask she wears in the blink of an eye.

tip: she is a person with no facial expressions, and the way she shows her emotions to everyone is through her masks, and each mask has its own emotion, Usually Kokoro has four masks that are always flying around, expressing emotions: "Ko-omote", "Hannya", "Uba", "Fuku no Kami".