Board Thread:Questions and Answers/@comment-25902008-20141221023102/@comment-17259909-20141231201311

I found the translation (Hunter x Hunter alphabet to Japanese here).

Kanji: ミトさん、元気にしてますか？オレは元気です. カイトと仲間 白鳥を見ました. 最高に綺麗だったよ！！

Romaji: ''Mito-san, o-genki ni shitemasu ka? Ore wa genki desu. Kaito to nakama, kokuchi wo mimashita. Saikō ni kirei datta yo!!''

English: How're you doing, Aunt Mito? I'm fine. I saw kokuchi with Kite and his friends! It was the most beautiful thing ever!!

Kokuchi is the species of swan Spinner Clow was trying to save.