I was leveling up my Trung Sisters append skill because I knew I wouldn’t need all 300 Servant coins to level them up to 120 for awhile. While doing this, my account misclicked and unlocked the extra damage append skill. It isn’t the end of the world because at their current NP level I can still get them to lvl 120. I will just either need to get an extra copy from their banner now, the Anniversary or New Years banner, or wait until I get them to bond lvl 15. I am so pissed