Ange was so shocked by the sudden change of the situation that she wasn't able to understand what was happening when the heads of the bandits fell down.
Yale also couldn't believe the situation because the person who had killed those bandits had appeared suddenly without Yale noticing about his presence until the bandits died.
Yale's perception was lowered because he was very far from that planet, but he couldn't believe that someone was so good at hiding his own presence.
Obviously, there hadn't been any teleportation because there was no way that Yale didn't notice it.
That man had been following Ange for a long time, but no one discovered him.
When the bandits surrounded Ange, they also surrounded him, which led to him cutting the heads of all the bandits in an instant.
The man who saved Ange had long black hair and red eyes. With almost all his body covered with a cloak, only his head and right hand were visible.