When you win a battle, you gain 10 HP and 2 KI points permanently. When you loose a battle, you gain 5 HP and 1 KI point.

To level up: If you are at level 1-4, you need to win 4 battle sto raise a level. From 5-10, you need to win 5 battles, and from 10-20, you need to win 10 battles. Anything else, you will need to win15 battles.

When you level up, you gain one  point permanently for: Strenght and speed.

If you fight a character with 5 or less levels than you, you may still raise your stats, but you may not count it as a victory for a LV up.

Every 5 levels, or every multiple of 5(level 5, 10, 15, 20, etc...) you may gain a skill of your choice, as long as its a skill your character can learn. Skills are discussed on the Skills list. You also may gain an aditional dodge.

Senseis are teachers. Some characters will be choosen as Senseis, masters who are able to teach skills to characters. As a sensei's level grows, the more skills he is able to teach. To learn a skill from a sensei, first find a character whos a sensei, and spend 24 hours without fighting. Your stats will increase by 5 HP and 1 KI point, and you will adquire a new skill. You may only do this every 5 level.

Also, for a fee, you may enter a chamber with a monster to fight and train.

Go to other links to learn more.

Bellow is a website full of pics.