Koyou had her erikae (turning of the collar [from red to white]), which is her official debut as a Geiko. She walked the streets of Gion Kobu to go present herself to ochaya (teahouses), okiya (Geiko houses), and the stores she frequents to thank everyone for their support.
OBI is a sash for traditional Japanese dress, keikogi worn for Japanese martial arts, and part of kimono outfits. There are many types of OBI, most for women: wide obis made of brocade and narrower, simpler obis for everyday wear. The fanciest and most colourful obis are for young unmarried women. The usage of the obi is regulated by many unwritten rules.