Manga by author Sakurakouji Kanoko - Status ongoing

From Summer-Rain:The story unfolds in the Edo era in the Yoshiwara red-light district of Tokyo. Akane a girl whose family is from Samurai is sold to a brothel to be orphaned. To be the "little sister" of the "lady" No 1 spot. This will bring a client ask, then she meets a stranger very peculiar man. What will happen after that meeting?