How does skill evolution works ???

[Nionyx]

I dont know how to use the skill evolution through momotarou , i tried leveling up my skill to 10 but i still cant get any of my weapon to evolve. Pls help

[Riddras]

Info from the following page: http://onigiri.wikia.com/wiki/Skills#Skill_Evolution

Skill evolution is available through Momotarou and allows the player to increase the rank of skills that they have maxed. A skill is not always evolveable, several requirements must first be met. That is, to be evolveable, a skill:

- Must be evolveable on a weapon, as shown in the image to the below. Note that this is randomly generated upon obtaining the weapon, and does not occur from skill change. Only the skills that are generated when the weapon is initialized may have evolution potential. (the only exception is ougi skills, which usually can be evolved once)

Evolveable skills
- Must be maxed. (so a rank 1 skill needs to be at 10, a rank 2 skill needs to be 20, and so on)

- Momotarou must be the required level. (rank2 at level 3, rank3 at level 7, rank4 at level 12, rank5 at level 16, rank6 at level 20)

- Some skills may have multiple borders, indicating multiple possible evolutions.

[Miyano311]

the only exception is ougi skills, which usually can be evolved once

btw innate ougi skills are not evolvable :p