Board Thread:News and Announcements/@comment-28757546-20161117120652/@comment-5055516-20161117125842

google translate translates it a bit better imo:

It will be released at the end of November 2016! Free the potential ability! The new function "Potential liberation" can draw out the power of the character even more than when Lv.MAX! Collect the new item "Potential ability ball" and train characters as you like while choosing branching routes and troops by yourself! ① Power up with potential potential ball! If you consume potency balls and release trout, you can master HP, ATK, DEF or "Potential skills" to work like passive skills! Let's strengthen your favorite character rapidly! ② Even if the route is stopped in the middle of opening the additional route with the same character, you can open the additional route by using the same character. It is also possible to master new "potential skills"! ③ Route requiring Special Movement Lv Basically, if you have "potential ability ball" you can release the potential ability, but there are also routes that require "more than a certain number of Special Moves Lv"!