Masamune recieves a letter with the words "Pig's Foot" written on it and realizes someone knows about his past. Masamune tries to find the person who sent the letter, and it ends up being someone rather surprising.
Unknown X, the one who sent 
me the "Pig's Foot" letter...
..."المجهول إكس أرسل لي رسالة "قدم الخنزير
Diesen Unbekannten X, der mir den
Schweinehaxen-Brief geschickt hat.
que me dejó la nota que decía "Cerdito".
que me dejó la nota que ponía "Cerdito".
Je dois retrouver l’inconnu
qui a envoyé cette lettre.
Chi è X, la figura misteriosa 
che mi ha mandato quella lettera...
Pessoa X que me enviou a 
carta com "Pé de Porco".
Найти неизвестного, 
что оставил мне то письмо.