File Name- Jenny-makima-addon-mcpe-1.21.mcaddon ~repack~ -

Go to > Create New World (or click the pencil icon next to an existing world to edit).

This suggests the add-on is a "crossover" or "companion" pack, combining two popular custom entities into a single behavior pack to reduce file redundancy for the player. File name- Jenny-Makima-Addon-MCPE-1.21.mcaddon