I already embedded the soft subs to the video (If you can't see the subs, just enable Sub track in your player's subtitle settings), but the subs font and style are all formatted to default after encoded with Handbrake and I can't find a way to fix this, so:
1) Download soft subs here.
2) Open VLC player -> Add subtitle file (looks like VLC is the only player that keeps the original styles of the soft subs)
3) Enjoy the musical!
P/S: Please excuse my poor translation of the curtain-call talks. The dialogues are sometimes overlapped and unclear so I could have mistranslated some lines in the process ^^