TIPS I: COMPATIBILITY

All living beings have a sign based on their birthdates. There is compatibility between humans and monsters according to their given signs. Below is an example. Arrange the signs in a circle. If the signs are connected with a line forming a square, the top two signs of the square aren't compatible. This is an example of an incompatible relation.



When the signs are arranged in a circle, if the signs can be connected in an equilateral triangle, all three signs are compatible. This is an example of a compatible relation.



Signs that face each other are very incompatible if they're the same sex but compatible if they're the opposite sex. Monsters are different from humans of either sex, monsters are unisex. Here's an extreme compatibility.



As you can see, compatibilities are determined by the arrangement of the signs. Compatibility affects effect values like the damage value and effect probabilities like the success % of magic usage. For example, when attacking with a weapon, if the two are compatible, the damage value increases by 1/4, and if very compatible, it increases by 1/2. On the other hand, if the two are incompatible, the damage value decreases by 1/4, and 1/2 if very incompatible.