After volunteering to take part in a duel for the leadership of his unit, Musashi is confronted with a grim reality.
Your expression seems to say, 
"Who the heck is this?"
"تعابير وجهك تقول "من يكون هذا؟
Du siehst mich so an,
als wüsstest du nicht, wer ich bin.
Tienes cara de no saber quién soy.
Tienes cara de no saber quién soy.
Tu te demandes qui je suis ?
Hai l'espressione di chi vorrebbe dire 
"E questo chi diavolo è?".
Está com uma cara de "Quem é esse aí?"
По лицу вижу,
что удивлён, кто я такой!