This japanese vintage Happi 法被 Kimono is made for the Kanto Matsuri (one of the biggest traditional festival) celebrated the Akita region.
On the back of the vintage kimono "Otafuku" represents a lovely, always smiling Japanese woman who brings happiness and good fortune to any man she marries. She is also known as the Goddess of Mirth.
The Kanto festival started during the Edo period (1751-1763) the goal during Obon season (3-6 August) was to drive out the devil that made people sleep but now it is celebrated to expel unhappiness and for good harvest.

A Happi is a traditional tube-sleeved Japanese coat, usually worn only during festivals. Happi typically feature symbols and/or text on the lapels, with a larger design on the back of the coat.