Citra Mii Maker Portable -

Fixes crashes in games that require a Mii to boot or function. Step-by-Step Setup Guide

According to community discussions, the nightly builds of Citra are often already portable because they are distributed as zipped executables without an installer, making them ideal for this purpose. However, if you have the installed version, you can still convert it to a portable state manually. citra mii maker portable

Using a tool like (now archived but still functional), you can dump your 3DS's NAND save data and extdata, which ensures Mii Maker will no longer report corrupted data. This process essentially creates a digital copy of your console's system environment, which Citra can then emulate. Fixes crashes in games that require a Mii

The 3DS Mii Maker offers expanded options compared to its Wii predecessor: if you have the installed version