Mae ni, hikari no sasu hoko ni

Kaoru thinks about his father again. In a laboratory, his father shows one of his employees an invention, only to be disappointed at his reaction. Kaoru then thinks back to when Shinobu made a remote-controlled airplane, and their father was very proud of Shinobu. It is revealed that their father cares more for Shinobu than for Kaoru. Their uncle, their father's busin...