Sono Koi, Setsunasugite Shinu.

As she laid dying, her final wish was to erase the memory of her existence from the world, so that her lover would not be sad. A love that can never be remembered... A collection of four sad love stories previously published in The Margaret magazine.

(Source: Margaret Comics, translated)

1. Kanojo no Sekai Boku no Sekai (彼女の世界 僕の世界 by Nana Shiiba)
2. Boku wa Kimi no Shiro (僕は君の白 by Mitsuo Shimokitazawa)
3. Bug's Life (バグズライフ by Sono Kisaragi)
4. Owaranai Natsuyasumi (終わらない夏休み by Setsuna Ousawa)