After listening to the treat of the bandaged leader, Aster completely discarded the idea that someone had set a trap for him, if that was the case the guy wouldn't have given him a "chance" to live.
To the surprise of the black clothed guys, instead of the normal reactions they are used to see, such as a coward spineless man that runs away leaving behind its companions to a fate worse than death, or the useless resistance which ends in a fate worse than death for both the man and the female companions.
The black-haired youth in front of them had a smile which wasn't a smile, making them feel uncomfortable.
And they had good reasons to feel like that, Aster was experiencing an inner debate right now, rationally he wanted to take this chance to start with Kana's training, on the other hand, every cell of his body was urging him to rip all those guys to shreds.