One day, when you arrive at school, you find a mysterious letter on your desk. You don't know who wrote it or sent it... You decide to search for the owner of this letter with your friends Oa, Miji, and Jia. Who could the owner of the letter be?
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One day, when you arrive at school, you find a mysterious letter on your desk. You don't know who wrote it or sent it... You decide to search for the owner of this letter with your friends Oa, Miji, and Jia. Who could the owner of the letter be?
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