Strange filetypes in a 3ds game?

I want to rip some things from the 3ds game Tales of the World: Reve Unitia, mainly the character art used in story scenes. I've managed to get the rom decrypted and all that, but the resulting files don't seem to be anything common... I don't know what to do with .jtex or .bjae files, as google doesn't bring up anything relevant at all.

Can anyone please help me with this?