yes.

Well, when it says "all" and isn't followed by "your field", then it is everyone.

Its one of kimimaro's huge weakness, use it against a Edo Hiruzen Team? Better pray to god you're faster in 3v3, and if you're not...well...that barrier will backfire.

Well solution to this problem is just not instantly use Kimimaro and wait till end of round then start to spam em :P and if your friend have like gaara you can destroy that barrier after all your friend ninjas use mystery.

yeah, that is what I am thinking as well, I am planning to get my 4 star minato on todays fuku but it gave me a 2nd thought since kimi is good if and only if you are faster than the enemy.. if not, you are *ed up..

yeah, most of my friends are faster so it ultimately we beat them in their own game

Kimi can still increase enemy mystery cooldown by a good amount, so either way your opponent will skip his Nuke turn in round 2 and stay afk mostly. Even though you need to aim at his nuker in round 1 and if he has dodge then you need to drop it somehow with standarts, mystery and etc. Same way you can block enemy Hiruzen in turn 1 and 2 if your Kimi is faster.