Can't wait to play manhole ;-) LOL. Been loosing the little hair I have playing Pomping world.
The JP versions of magical chase are exactly the same, just in slightly different packaging. The enhancements that are in the TG version are not included which is a shame.
The packaging of the original release was in a standard gray baked hu box. The PCE Fan release comes in a clear case, like CD titles did along with some of the later Hu card games.
Snip from Videogameden.com
"The original Japanese version of Magical Chase was released twice; first as the standard edition (tested here), and secondly as a special mail-order "PC Engine Fan" release (picture on the left). PC Engine Fan was a Japanese magazine dedicated to covering the PC Engine system and published by Tokuma Shoten. Both games are identical but the back of the case and the instruction manual come with a different "PC Engine Fan" logo. However, they are both equally rare and expensive. "
Here are the pics of the case backs:

