The Raffl Tree Boss in "Romantic SaGa 2: Revenge of the Seven Heroes" is a very powerful BOSS in the game. If you want to defeat this Boss, you can use staff/hammer, martial arts, fire magic and earth magic. This guy is very vulnerable to these methods, just pay attention.
How to fight the Ravel Tree Boss in Romance SaGa 2: Seven Heroes’ Revenge
The Lafleur tree isn't much of a nuisance. It is vulnerable to staffs/hammers, martial arts, fire magic, and earth magic. It will attack you with blood-sucking magic. However, its most annoying attack is inflicting confusion and hypnosis on your entire party. Therefore, it helps to have a character who can cast "water magic" (if you have an accessory that makes them immune to hypnosis, make sure to equip it).
While you can't stun the Ravl Tree, you can put it to sleep, so attacks like "Head Bash" are especially effective here. Overall, the Ravl Tree is an easier boss than the Guardian, with the Martial Artist doing an especially good job of chipping away at its health. With a few healers in your party, and some skills in putting trees to sleep, you should be able to chop down the tree without any problems.