aaaaaaaaaa---- the second Black Butler stage play was my favorite thing in the world~ so nostalgic <3
If you like Haikyuu at all, I've heard that has great stage plays, and of course Touken Ranbu.
But Tsukipro (Tsukiuta) is my life <3 so...
(but if you've heard of Tsukiuta separately, Tsukiuta is the original series, and Tsukipro is the sort of, umbrella/franchise name for all the spinoffs... Tsukiuta is 24 characters in 4 units, and Tsukipro is 85 characters total, including Tsukiuta. There are two anime series already, and a third one is coming in April).
edit: Oh! Also! Identity V is really popular, and that has a stage play from the same producers as Tsukipro and there are 5 of the same actors -- the guy that's Romeo, with the tattered cloak, in that video, is Aesop in Identity V, and he's also Kai in Tsukiuta now.