While doing some random testing I noticed I could go into combat, click on one of the guards along the east exit, and the other guards would start attacking the guard I made hostile without turning on me. I did this once to the guard captain in Pentil as well but have not been able to recreate.

Testing this in other areas has universally caused everyone to turn against me at the same time.

I found a glitch involving the clone on GameFAQs https://gamefaqs.gamespot.com/gba/589485-shining-soul-ii/cheats

and noticed nobody seems to be using it. I have validated its existence on both the JP cart and the English cart. Using this ive been able to power wine to any stat i want, come into the clone room, throw a healing item as he runs towards me, move down and ensure the item is gone (was used by the clone) and then turn around and one shot him.

In addition ive tried throwing a number of other items to see if it has any effect but nothing yet, wings, soul, mp items, bombs. Only healing items seem to be do anything leading me to believe that this may be intended rather than a glitch.