Utsuro no Shouzou

"Do you like your brother?"

Ever since he came out as gay, Kou has been shunned by his family. But one night, after staying late at school to prepare for the cultural festival, his older brother, Sanehiko, shows up to take him home.

During the drive, Sanehiko confronts him: "I found a video of you doing 'brother play' with a guy." Kou fires back, "You're no different. You had to dig through gay porn to find it."

Sanehiko flies into a rage. As the two struggle, the car crashes through the guardrail and plunges down the hillside. Even after the crash, Sanehiko still comes at Kou with murder in his eyes. Kou desperately shoves him back—

Some time later, Sanehiko returns home from the hospital. He has lost his memory... and seems like an entirely different person…

(Source: Akaneshinsha, translated)

Note: Includes the one-shot "Ori no Naka no Omokage".