Not my personal best. In my defense, we were quite busy. The book slipped my mind. [He rubs his wrist. His toad croaks an inquiry. He tilts his head and pats him.]

You look like a Charles. [Newly named Charles the Toad closes his eyes. Kaeya hums and his robe echoes it. He stops, fingers hovering over the toad. The robe stops echoing his humming. He straightens,]

A bit like a tuning fork.