You need vpn for creating account after that you can turn off your vpn, since this games is story heavy if you want to enjoy full experience you need understand japanese, the story quiet good for me.
Square Enix games especially the jp version have long sustainablity so i have a great expectation for Nier Reincarnation since it was same publisher and Yoko Taro story never fail.
Have fun i will enjoy this games while wait for Nier Reincarnation release in 23 December.
Will upgrade my review after the release, the story seem deep, the only problem maybe in the gacha system if only this game was one paid only it will be best.
Please consider if you want to play it for a long time periode since it was square enix games be aware have fun.