Mizuhara Hazuk

- only daughter of the famed Mizuhara dojo
- strong enough to be its co-instructor next to her dad
- she sets out to join the tournament
- she believes she’ll be able to marry the love of her life Seed if Bellnas wins
- her father has secretly decided that the winner of the tournament will be inheriting his dojo

Bellnas

- sarcastic, weathered-looking man with a shock of white/pink hair
- quite snarky
- the primary rival of the main character
- also joins the tournament

Seluna

- elder sister figure
- she's willing to be Seed’s partner when he signs up for the Toshin tournament