i'm thinking the ROM was possibly nuked..as even on the "scene" with the "ds" releases it has yet to show up there...and googling NFO scene name gets nowhere...perhaps it was removed because it's a bad dump?..which a lot of bad dumps or NUKE / DUPED releases get immediately pulled if a mistake happened
http://nforush.net/forum/3ds-scene-releases/monster_hunter_4_jpn_3ds-kirin/