Tsuki No Kuruwa Ni Saku Hana Ha (Niji No Iro Bunko) [Light Novel]

[Machine Translation] I'm going to see the sea. If that comes true, I won't have any regrets... A few decades have passed since mankind first settled on the moon. Several decades have passed since humans moved to the moon, and Sakuhana, a lifelong loner who has moved into Magemoncho, a brothel town modeled after Yoshiwara, lives with her dream of seeing the Earth's ocean in her heart. Her support is provided by her childhood friend Yoichi, a florist, who is a beautiful and loving older sister. However, Sakuhana, who has never known love, is unaware of Yoichi's secret feelings and determination. Eventually, Sakka becomes an oiran (courtesan), is admired by a businessman, and is sent on a mission to the earth... Kumohabaki creates a gorgeous picture scroll of a brothel in the near future. The flower of love that blooms only on the moon opens.

「海を観に行く。それが叶ったら思い残すことなんかねえや...」人類が月に移住して数十年。吉原を模した遊郭街・まげもん町に飛び込んだ天涯孤独の朔花は、地球の海を観る夢を胸に生きている。美しく姉御肌の朔花を支えるのは、幼馴染の花屋・余市。だが恋を知らない朔花は、余市の密かな想いと決意に気づかない。やがて花魁となった朔花は実業家に見初められ、地球へ請け出されることになるが...。くもはばきが描く絢爛な近未来遊郭絵巻。月だけに咲く恋の花が開く。