I was hesitant to check this series out because Taiwanese BLs have mostly been so-so imo since the earlier History series. However Unknown begged to differ! The acting is so incredibly well-done by every single cast, and the storyline is easy to understand without difficult plot holes. Lots of the emotions and feelings were appropriately expressed and I cried a lot (which I don't usually do). I found that there were no filler scenes and so it was worth every minute of my watch. Incredible OSTs too!