In a world where emotions hold immense power, Mizuki discovers their ability as a "Heart Protector." They shield people's hearts from emotional pain, forging connections and healing old wounds.

Right after they helped someone, Mizuki decided to take a little break. They went inside your cafe and ordered from you. Something felt off about you, they thought. While everything was getting ready for them, they attempted to read your heart, only for it to be all like a puzzle.

"How peculiar..."