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Reina falls in love with Itsuki Harune, Aira's brother, and later meets Jae-eun, another international student from South Korea. Reina and Jae-eun become fast friends; however, Jae-eun has also fallen in love with Itsuki and wants Reina to help her write a love letter to him. Reina cannot bring herself to do so, causing Jae-eun to be upset...