I will just copy part of stuff I wrote for new fans of Yuumori on reddit. Regarding musicals and stage play:
5 main musicals each around 3 hours. It adapts most of manga from all adaptations
Op1: Durham chapters, Noahtic arc, Study in Scarlet arc
Op2: Baskerville arc, Train arc, Scandal in British Empire
Op3: Jack the Ripper arc, Yard arc and Adventure of one student
Op4: Whiteley Arc, Mary arc, Milverton arc
Op5 Final problem
Concert to celebrate 5 parts of musical
I have made post about how you can legally watch Musicals with English subtitles here, this might only work until July 2025 because up until now Company that makes it put files to watch on streaming for limited time to promote next musical.
2 stages around 2 hours. Just like musical it’s theater adaptation but no songs, it’s starts quite faithful but after Frida arc skips to Scandal in British Empire and had some problems… Anyway it was a lot less popular than musicals so only 2 parts, no English subtitles, you can search for it on Chinese bilibili if it wasn’t taken down. It’s still interesting to watch even if costumes weren’t best, they adapt William’s kidnaping that sadly wasn’t adapted anywhere else, Frida arc was creative too. Side note that musicals and stages were done by different teams and actors.