In this RP, like some others, your character has HP and MP. Below are the levels, along with the HP and MP that goes with it.

Level - HP - MP

0 - 30 - 0
1 - 40 - 5
2 - 50 - 10
3 - 60 - 15
4 - 70 - 20
5 - 80 - 25
6 - 90 - 30
7 - 100 - 35
8 - 110 - 40
9 - 120 - 45
10 - 130 - 50
11 - 150 - 55
12 - 170 - 60
13 - 1 - 0
14 - 200 - 75
15 - 225 - 90

However, there are buyable items that will increase your HP and MP. (However, they don't work for level 0 or level 13!)