Since everything is new to Tohka (including her own emotions), she has a very cheerful and child-like personality that can make her seem naïve, emotional, energetic, and gullible at times. She easily became excited at seeing all the things on Earth that she had never seen before. Origami has used her naïve nature against her on multiple occasions. In these scenarios, she usually needs one of her friends (usually Shido) to point out she is being deceived. She also has a voracious appetite, with a particular fondness for kinako bread. Despite her lack of knowledge or experience, Tohka does have a reasonable sense of modesty, as shown by her violently overreacting when Shido caught her in humiliating situations. It has been shown several times that Tohka has a decent level of sensibility and instinct towards the battle, which arguably is the only thing of which she has any real memories. When in agreement with something, Tohka often has a verbal tic of saying "umu" (うむ), an old-fashioned expression of affirmation. Tohka's Angel is , which takes on the form of a gilded throne that doubles as the scabbard for her broadsword. The throne emerges from the ground upon calling her Angel's name while stomping her heel.

“──My name is Yatogami Tohka. An important name given to me by an important person. ──Isn’t that nice? Umu!"