Kimi no Wasurekata wo Oshiete

Shuu Matsumoto, a college-dropout living the NEET life, felt it wasn't worth living anymore. At the invitation of his friend Tomi, he decides to visit his hometown and his old high school. A chance encounter with childhood friend turned celebrity, Sayane Kiriyama, turns the wheels of Shuu's fate once again.

(Source: Kadokawa, translated)