Boku no Naka ni Kimi Ga Inai

Memories of you that I lost because I love you.
Subaru, a college student, loses only part of his memory in an accident. It is a memory of him "living together" with a high school classmate, Soushi. At that time, he was sure he hadn't talked to a guy who was cool and popular, unlike himself. Subaru who was discharged from the hospital, started living together and learned about Soushi again. From the surprisingly caring and anxious man, he realized that he was being looked at with a kind gaze he had never seen before…

(Source: Frontier Works, translated)

Note: Includes an extra chapter.