Makes skills stronger.

thanks :)

Hello!

Skill Breakthrough (+series) or Skill Trials (Yseries) enables you to get much stronger skills than your ninja already has. It is also to give you a choice to have your ninja get a skill appropriate for your battle style. Some ninjas only have the +series while some others have both, like Kushina Uzumaki [Red Hot-Blooded Habanero], her passives for Nin/Crit Scaling and her Y-series which gives Res Scaling.

All of this for the cost of using Ninja Fragments (for +series skills) and/or using Experimental Vials/Advance Experimental Vials with Experimental Protection. Most of our Ninjas in-game requires a 4-star level before it becomes available for this process. Hope you understand and thank you.