This is the hallmark of an "Extra Quality" cheat list. It allows you to recruit characters like (from the Chrono Stone timeline) or Beta without playing the linked sequel.

Standard 3DS resolution (240p) looks blurry on modern screens. Follow these steps to achieve "Extra Quality" visuals: Inazuma Eleven Go: Shadow – Cheats - GameFAQs

To maximize your Inazuma Eleven GO: Shadow experience on Citra, you can combine powerful cheat codes with specific graphical enhancements for "extra quality" performance. 1. Top Cheat Codes for Shadow (EUR)

In the Citra settings menu, go to Emulation > Configure > Graphics and set the Internal Resolution to 3x Native (1200x720) or higher. This removes the pixelated look and makes characters appear high-definition.

Inazuma Eleven GO: Shadow on Citra involves a combination of Action Replay codes for gameplay advantages and emulator settings

For those seeking the ultimate "Extra Quality" experience, these common cheat categories are the most popular among the community: