I should outline the general steps someone might take: setting up a custom firmware, using tools like Atmosphere, installing Luma3DS, and then applying the necessary mods. Highlight the importance of caution and backing up the system. Also, note that the specific mod they're asking about might not be widely known or available, so they might need to look for developer forums or modding communities.
The number "220 Install" is a bit confusing. It could refer to a version number, like v2.2.0. But I don't find any official information about such a mod. Alternatively, "220 Install" might be a mistranslation or a mix of words. Maybe it's "Install 2.20" referring to a specific version of a mod.
Make sure the response is informative but clear about the risks and legal aspects. Encourage them to support the developers by purchasing legitimate copies and check if there are any officially supported enhancements or features in the game that might satisfy their needs.
Since Yokai Watch 4 is a console game, modding it is more complicated than on PC. But I know that with homebrew tools like RCM (Relay Cable Mod) or tools from the Switch Hax community, it's possible. However, using these methods could void warranties and carry risks like bricking the console.
The user might be looking for instructions on how to install a spatial audio mod or a navigation enhancement. I should explain that installing such mods typically requires technical skills and some understanding of Switch hacking. Also, mention the risks involved with modding hardware and software, especially piracy concerns.
But "Purapura" could be a translation issue. In Japanese, "Pura Pura" (ぷらぷら) means something like floating or drifting. Maybe that's referring to a specific mod focused on navigation or exploring the game world. Alternatively, it might be a fan-created patch or mod by a user named "Purapura."
Additionally, since the user might be a fan of Yokai Watch looking to enhance their experience, I can mention community resources and official content like soundtracks or merchandise. Maybe offer tips on enjoying the game's features without modding, like exploration and social interactions.