Azumi met "Lion-san" on the day of her mothers' funeral. He is the ghost of a passenger from the ill-fated rocket that crashes on their town. They met again in the spirit world when Azumi got drowned and her soul went to the other world but this time, Mr. Lion is unmasked.

As Lion-san relates to Asumi his unfulfilled dream of making it to space, the girl makes it her personal dream to travel to space.

(Source: AnimeNfo)