Kimi to, Sekai ga Owaru madeKareshi na Kanojo; Kimi to Sekai ga Owaru Made; Natsu Oto; Until the End of the World; With You; Yuki Machi no Koi; キミと、世界が終わるまで; 與你一起直至世界終結

The last email I received from Takashi was blank. I have been constantly wondering what the meaning of the blank email was that you sent to me when you were seriously injured in the accident…The day that Natsume first met Takashi was on a summer like hot day. The two of them didn’t want to put their words into reality and only embraced each other without saying anything or asking anything. And what was it that Takashi wanted to send…!?