If you don't know the Buddyfight Ace series, you can either go to Youtube to look it up and watch the anime or just go into this without knowing shit.
Now I'm going to introduce one character which is Bloody Eyes.
There's 2 forms for buddies to take form in earth
One is the kawaii version, the other is their true form.
Here's Bloody Eyes mini form a.k.a the kawaii form
And his true formThe only way to describe him is that his personality is he is the dragon and less serious Tokoyami from Boku No Hero Academia.
He will appear in the Heroes of Hearth story but this story is not related to that story.
Anyways enjoy this story!!