who do you think will a fight Rena Ryuugu from Higurashi no Naku Koro ni or Kotonoha Katsura from school days?

Rena Ryuugu!!!

I don't know, maybe a tie. Because they both have a cleaver as their weapon (attention: Rena's weapon is NOT a hatchet, it's a cleaver. And Kotonoha's weapon NOT an axe, but a cleaver.)