Citra: Support for encrypted 3DS ROMs is being worked on (currently, it needs them decrypted, which is often a destructive one-way process) : r/emulation
How to Decrypt Nintendo 3DS Games / ROMs for CITRA Emulator - YouTube
Decrypted 3ds roms for citra.pdf - Google Drive
Pokemon Ultra Sun: Update 1.2 [Decrypted] 3DS (EUR/USA) ROM Download
cant run decrypted 3ds file in citra (pokemon ultra sun) : r/Roms
Get Nintendo 3DS ROMs 【 Free Download 】- Roms World