What rules did your themed anime arena use Tojiko?

You could use that as a starting place, see which rules seems reasonable to folks here, which need to be modified, and which just don’t jive at all.  It won’t be an all encompassing scripture, but you could get a rule system in place and figure out a narrative to christen it.

Might take some work to find the right balance so the rules inform without constricting, but you never know until you throw an interest check up and test it out.