120 is still tough, isn't it!!

Only 5 hours left! Glad it's a holiday, but! Whether I can make it in time is unknown... Quest 105 says to raise the Hero's job level to 3, but I don't know how to do it, and I can't even raise it by 1 level right after it's unlocked, what the heck!? My 'PP' is 0 points, how do I increase it⁉️