Beat the game and at
the end of the
credits, you will
have a choice to
save. Save and load
your game. Go to the
entrance of the
prison and talk to
the guard. He will
ask if your a true
adventurer. Select
the first option and
the monster will
becomes stronger
than normal. Talk to
the guard again and
select the 2nd
option to return the
monsters to normal
Whenever characters
need MP, go to the
inn, do not rest,
just go upstairs
walk around. You
must walk around by
knocking in too the
furniture, and
slowly... your MP
would be recharge!