Monster Property and Property Correlation Edit
Players' Monsters can possess one of 5 Properties: Fire, Water, Wind, Light, or Dark. (NPC monsters may also be of the Pure element, which is neutral to everything.)
These Properties have a correlation of strength and weakness. Water > Fire > Wind > Water. Light and Darkness are strong against each other.
During battle, you can check the Property Correlation by checking the color of the arrow.
Green indicates you have an advantage, red indicates you have a disadvantage, and yellow means neither you nor your opponent have the upper hand.
Note that Ifrit (Water) has a passive that guarantees attribute advantage over any monster.
When attacking with disadvantage, the attacker gets extra 50% glancing hit chance. (A glancing hit cannot apply harmful effects, with some exceptions.)