Kotarou's nickname is "Kotarou the Runner".  He's a master of defensive battles, and minimizing losses when things turn bad.  His quiet, unassuming nature and the way he fights make him less likely to stand out than his other friends.  However, if he was put up against a real foe, someone who he couldn't beat unless he gave up on running, you might just learn his true name...
neither we nor you people can stop it.
.فلا نحن ولا أنتم قادرون على إيقافه
ninguno de nosotros puede detenerlo.
nem o seu povo ou o meu
 podem pará-lo agora.