How to Add Legendary Yo-kai

Original guide by @stringsbutalt on Discord, rewritten by @n123original. This guide assumes you already know how to navigate romfs and use CfgBin Editor. If not, please read the starting guide. Additionally, this guide does not explain how to add the actual Yo-kai, please read the Adding Yo-kai guide for that, this is just for configuring the pages so that they can be obtained.

• First, check which game you are modding (if you somehow don’t already know).
  • If you are modding YW1, open legend_config*.cfg.bin from data/res/legend.
  • If you are modding YW2 or later, it will be found in data/res/character instead.
    • The * refers to versioning, so instead of just legend_config.cfg.bin you might also see files such as legend_config_0.01b.cfg.bin. Pick the one with the highest version.
• Next, duplicate a LEGEND_DATA_CONFIG_* entry. A new one should appear at the end of the tree. Open it.
• Next, generate a new LegendID. No template is needed.
• Next, modify the LegendParamID to be the ParamID of the Legendary Yo-kai the page should award.
• Next, modify the Page, to match the index e.g. LEGEND_DATA_CONFIG_0 would have a Page of 0, LEGEND_DATA_CONFIG_123 would have a Page of 123, etc.
• Next, modify the Seal*ParamID parameters, they are the ParamIDs of the required Yo-kai for each slot.
  • Additionally you might want to modify the SpoilSeal* parameters, if 1 they will be revealed even if not achieved yet, if 0, they will not.
• Finally, increment (increase by 1) the ChildCount of the LEGEND_DATA_CONFIG_LIST tree that contains the entries.