The Heavy Class battle set is a series of battles fought in the Backyard of Low Town in Ghotza. Note: The secret condition for any battle in this set can be learned from Informant Zelen after receiving Biography of Backyard. Once a battle has been won by satisfying the secret condition, Zelen will no longer divulge it, responding "The battle bonus was claimed long ago, my friend. No point asking about it now, huh?"