Hi
I am not sure if this has already been covered in the past?  However I have been going through my PC Engine collection and came across this release schedule for the original PC Engine.
I have not noticed this previously but as you can see there are differences in titles and volume numbers:

Release Schedule:
01 The Kung-Fu
02 Bikkuriman World
03 Shanghai
04 Victory Run
05 Necromancer (Jaseikin)
06 Youkai Dochuki
07 Kato and Ken Chan
08 

09 

10 R-Type I
Hudson Volumes as released:
01 The Kung-Fu
02 Bikkuriman World
03 Victory Run
04 Shanghai
05 Necromancer (Jaseikin)
06 Kato and Ken Chan
07 R-Type I
08 Yuu Yuu Jinsei
09 R-Type II
10 Sengoku Mahjong
As I do not read or speak Japanese can someone help identify the following games:
08 

?
The character sprite looks similar that of Makyo Densetsu.  However nothing else matches!

09 

Maybe Pachiokun Juban Shobu?  Although the screen is similar the licensing information is wrong 
