I can confirm that the ace item drops in the NA version. You'll get several of them off of the final boss of the 10th stage.
Converse with fellow players
I'm certainly interested in chatting with you and seeing if we would fit in well together. I am, unfortunately, not a pro discord user, and I'm having trouble finding a way to send you a message. I'm 75/75 Br/Hu main (with a Slave katana and Nemesis Bow, and Ray units), with 75 Te/Gu/Bo as well. I've been playing with a RL friend who is also pretty serious about the game. We're definitely looking for mature people to play and group with. And yes, I would like to have a get to know you chat as well. If you're interested, let me know what the best way to have a chat is.