Because the only way to get this is through <a href="/wiki/Send_your_message_by_a_tuneful_Urchin" title="Send your message by a tuneful Urchin">Send your message by a tuneful Urchin</a>, which is only unlocked by playing the Fate-locked story <a href="/wiki/Mysteries_of_the_Foreign_Office_(Story)" title="Mysteries of the Foreign Office (Story)">Mysteries of the Foreign Office</a>.