For People who look at my Dragoon Skill List Translation I'll apologize that there was a slight misunderstanding.
First of all, Stamina Super Upgrade is a skill not a status boost thing.
Because 筋力 Kinryoku in JLT is Sta in OGP so when I read 筋力超強化 directly into English will be Stamina Super Upgrade. BTW the description for this Stamina Super Upgrade is Increases Max Attack Power, 1% for each Lv.
Okay guys some bit of more update. Yuuki-san added more skill to other classes and i'll do some of them as Yuuki-san put a full skill tree (have both original and new skill) which can confuse me
Bonus How to Get to Xenadia
Note: Only the new skills listed. Original skill are still available for 3rd Classes.