Board Thread:Shadow Fight 3 Discussion/@comment-38953520-20190413081123/@comment-31479589-20190414055149

Your welcome, but you still have some unanswered questions though. Guess I'll just leave my answers here.

The only thing the game told us is Emperor succeeded in drifting away the Night Warriors and kept the Dragon's Roar in his possession. We don't know what happened to the Dadao after that, which was a long time ago. Many things could have happened in such a long time frame, it's possible that the Emperor lost it or he just kept the Dadao somewhere else in the palace. He might still owns Dragon's Roar till this day, it's just the circumstances in Ch 2-3 forces him to not take it with him. Imo, Nekki didn't bother explaining more about the Dadao because it's not that important. The reason Shadow searched for it might be because he thought Shadow Mind can be vanquished with a sword, basically thinking like a barbarian. It's never implied that this Dadao is descended from the gods or such, or it has the properties of Excalibur in myth or other holy swords wieldable only by the chosen one.

And there is one more opponent that uses it: Ning the Mistress from Secret Fights. But tbh, there are nothing that suggest the events (aside from maybe Side Effect) or Secret Fights or Side Quests are either canon or parts of the plot. My take on them is they're some kind of expansion to the world-building of SF3, to show us that the world is not always centered on us and that there are much more things happening aside from the Shadow squad, Deng Rao's dreams, Hundred School Tournament, Legion's Attack, the Sphere, Bolo's plans, Insusceptibles, Moira, Legion Fortress, Shadow...