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...
A battle without glory, where you protect 
your allies instead of attackin' your foes...
معركة بلا مجد حيث تحمي فيها 
...رفاقك بدل مهاجمة العدو
Un estilo que consiste
en defender al aliado y no en atacar.
É uma batalha sem glória, quando você protege
 seus aliados ao invés de atacar o inimigo.