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He knew that each one had his own way of fighting, because of that, it was not good to follow the same style of fighting in martial arts. First, he would demonstrate in some martial arts films, for them to choose which would be best for them.
Of course, he knew that even if he saw it on film, it would be different if the girls used it since the fighting pattern of this world was different from his old world. But still, there were good references that could facilitate their choices.
"En." Yuki just nodded, she noticed that he was lost in his own thoughts. Her attention returned to the battlefield while occasionally talking to the girls about random subjects or even the children's struggle.
Before they knew it, the crowd grew even bigger. Maybe because of the loud roaring and banging sounds of attack, they got this far...