On the night of Astro’s suicide attempt, his best friend, Kai, was the one who attempted to save him. While talking to Astro and trying to prevent him from tumbling off a rooftop, Kai admits his feelings towards him but immediately gets cut off by the sight of Astro’s foot slipping, leading him to fall. Rushing to help him, Kai grabs Astro’s arm, saving him from death. 3 years pass and Astro goes on living not knowing how Kai truly feels, but that doesn’t stop Kai from trying to tell him.