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...
Even if, someday, we're all 
generals, leading our own packs,
حتّى إن أصبحنا كلّنا جنرالات يومًا ما
،ونقود جنودنا الخاصّين
Aunque algún día todos lleguemos
a ser líderes de grupos distintos,
Mesmo que chegue o dia que nos tornemos
 generais, liderando seus próprios homens,