Sayo Hayakawa

[6] After retiring from nightwork in 2010, she still remained active in Koakuma Ageha and began to be known as a businesswoman as well as a fashion designer.

[13] After debuting in Koakuma Ageha, she appeared regularly in the magazine while working as a hostess, until she retired from the nightwork in 2010.

She then moved to Ginza and was hired by a newly opened high-class hostess club, Bisser, at the age of 22, where her colleagues were like "future actresses" and "girls whose faces could often be seen on magazines" and the customers were the likes of overly-wealthy businessmen, overly-wealthy professional criminals, and so on.

[18] Sayaka Araki, in response to the retirement, was quoted as saying: "I feel it is a really, really great loss for the world of water trade".

[14] Hayakawa, along with the likes of Sayaka Araki, is a member of international charity organization H=and Project since 2009 when it was founded after the death of fellow Ageha model Sumire.