Vanter is very ambitious. Therefore, the desire for level-up is also very strong. At the time when vanter can level up, <level up of each grade, reach 50% of experience value> if the user does not level up Vanter through class at the academy, it will be stressful.
Vanter's stress weakens vanter’s motivation for work, reducing his total energy by 10% in five days (5 quests through Roggles).
The maximum energy penalty applies to 80% of the total. Stress phase = Min (ROUNDDOWN(post-stress days/5,0), 8)
The amount of energy by stress level in Vanter with Stamina level of 2
To relieve stress, user need to level up the vanter.