君を失いたくない僕と、僕の幸せを願う君

Synopsis

"I want you to be happy, Sou-chan. But that's why...I'm not good enough." During my first summer of high school, I finally realized how I had felt and confessed my feelings when my beloved childhood friend said these words to me. She told me that she didn’t have much time left, but wouldn’t elaborate. And from that day onward began my trial for the sake of a future that allowed us to be together. (Source: Kadokawa, translated)

Anime adaptations