"Watashi ga Inakutemo Shiawase ni Natte Kudasai" Nante, Fuzakenna.

As I was spending my student days alongside my beloved girlfriend, one day, she suddenly said goodbye to me. After becoming a shadow of my former self, I learned that she died after struggling with an illness.

The diary I received from her family was filled with her happy memories with me.

(Source: Amazon, translated)