Accidentally found that TENGAI's ROM can be used directly

[evoqoo]

\DATA\TENGAI in the game installation directory,
Just compress the file inside into a zip and name it tengaij.zip, then you can use fbneo core to play it in Ratroarch.
Not sure if there is a difference from the original ROM.

[farmerbb]

Same thing can be done with Samurai Aces - compress everything inside the SNGKACE folder and name it sngkace.zip.