"Aoi" Hikaru ga Chikyuu ni Ita Koro......
"葵" ヒカルが地球にいたころ……
Hikaru Mikado, the boy who loved every flower, suffers from a sudden death.
Koremitsu Akagi, a boy without any friends, is treated like a delinquent because of his evil looking eyes.
When the ghost of Hikaru appears before Akagi, the story begins──!
(Source: GanganOnline)