Do you already have the dumped from your own 3DS?
To ensure your Miis remain "portable," they must be correctly placed within Citra's virtual NAND. The standard path for Mii data is nand > data > [system_id] > extdata citra mii maker portable
His blood ran cold. He hadn't entered his name into this build. He reached for the battery, but his fingers felt heavy, sluggish. Do you already have the dumped from your own 3DS