Ep. 19: Mina se sente solitária e deprimida enquanto Riku está em Hokkaido.

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While Riku, his class, and the rest of the sophomores are away in Hokkaido, Mina starts to feel lonely from not seeing Riku. When her text messages to Riku go unanswered, she begins to fall into a depression. Meanwhile, Riku still believes that Sayuri and Sakurai are in a relationship and continues to ignore her. After returning home, Riku finally checks his phone revealing the numerous emails/texts and a heartbreaking voice message from Mina. (Source: Wikipedia)