Tartah - タータ

Nolnoa's young assistant in the shop. He suffers from argentosis, a rare sight condition which makes him effectively colorblind and thus initially unable to use magic because certain effects rely on inks differentiated by their color. He becomes a dear friend to [Coco](https://anilist.co/character/129840/Coco), who helps him by teaching him magic with which to circumvent his disability.