- Yo-kai Watch Shadowside: The Return of the Oni King: Minor antagonist
- Yo-kai Watch Shadowside animation: Major protagonist.
Touma is a light-skinned boy with short dark green-toned hair and brown eyes. However under the influence of the Onimaro his eyes glow red. After gaining the Yo-Kai Watch Ogre, he eyes will change colour (depending on which Yo-kai he chooses to transform into) during his transformation.
In the movie, he wears a highschool uniform consisting of a white shirt, a pale yellow vest, a blue blazer, a blue tie, black pants and shoes.
Due to his parents rarely being home and being a target of getting bullied, Touma seemed to have a very cold and aloof personality. Avoiding making friends, Touma seemed very distant to many people. He was shown to be quite apathetic. However, deep down inside, Touma can be described as a very kind person.
His personality seems to drastically change to a more fanboy-like way if the card game, "Lighting Speed Age" is involved. He is shown to act slightly more awkwardly when put in an awkward position, When Sendou Rei was in the shower and asked Touma to get her a couple things, Touma had a very odd reaction, while trying to keep his cool. He seems to have a soft spot for when it comes to his lonely childhood.
Touma has both antagonist role and protagonist role in Yo-kai Watch Shadowside: The Return of the Oni King.
With his parents rarely being home, and him getting bullied by other people, Touma feels lonely and frustrated. The Onimaro end up using this to their advantage to draw Touma on their side, gifting him the "Kigan Gear", a device that allows Touma to wield inhuman power.
For a while Touma helps the Onimaro in spreading their infection, but eventually he turns over to the side of good, and joins Natsume and the others in their fight against the Oni King Rasen. Soon the Kigan Gear is turned into the Yo-kai Watch Ogre, giving him the ability to turn into 4 different kinds of Yo-kai.
After the events of the movie, Touma has joined Natsume and Akinori to become the Yo-kai Watch Detective Agency, that solves supernatural incidents. Touma's ability is to be able to turn into different Yo-kai. Haruya seems to be interested in him.
His family name "Tsukinami" (Japanese: 月浪) literally translates to "moon wave".
His given name is likely taken from "tō" (Japanese: 冬 winter), being one of the four seasons, which Akinori, Natsume, and Haruya are also named for.
- He is the first Yo-kai Watch User to:
- Not have a Yo-kai Partner.
- be an antagonist before becoming a protagonist.