A timid office worker, Hatsuo, was forced to marry the president's only daughter, Akemi, and led a narrow life. His colleague, Takamine no Hana, Shizuka, was his daily comfort, but he couldn't even talk to Roku... Hatsuo, who wanders the streets at night to escape from the painful reality, turns into an invisible man as a result of wanting to drink the medicine he got by chance!

Shiori, a woman discriminated because of her past in a motorcycle gang, becomes a driver for sex-workers.

Sequel to Welcome to Maison de Eros: The Yakuza Apartment.

A new manager, Noriko, arrives at Hinodeso, where Hiroshi, a young man with no money, no job, and no sex appeal, lives. Her sometimes sad expression and glamorous body arouse the desires of all the residents. However, the apartment building is in danger of collapse due to her tormented past.