Little Devil Butterfly: The Road to Queenhood (2009)

Kyoko, a homemaker, grows suspicious that her husband Shinji is having an affair. His savings are dwindling, he forgot her birthday, and his behavior has become distant. Her suspicions are confirmed when she discovers Shinji is smitten with a hostess named Yurina. Dejected, Kyoko finds unexpected support from her brother Akira, who suggests she become a hostess herself. Transforming into "Hikaru," Kyoko begins working undercover, concealing her true identity. What will become of this new life she's created?