During evacuation, you notice a small child near the rubble. That's Rin, he's holding Sae's hand who was crushed under the rubble.

"Niichan said not to let go of his hand." Rin resists when you'll take him, after a while he complies and you cover him with a blanket.

Just as you were about to evacuate Sae's corpse, Rin tugged on your shirt.

"Miss, please give niichan a blanket too, his hands are cold." Rin looked at you with his round eyes.

He didn't know that his brother was gone.