Due to the Perry Expedition didn’t happen in history of this story. Japan maintained conditions that closed the borders and cut down communications with the outside, until hundreds years later forced to establish trade contacts.
The conservative ideas and concepts intensely clashed against the exotics. A large number of labors gathered in Edo to build the trade port, which resulted in serious imbalanced propotion between male and female. Consequently, the long closed red-light district opened again by Japanese government under internal and external pressures, caused by a rape case that foreign sailor involved in red-light district Yoshiwara.