So, except Kikuri being a broke drunk bassist not knowing what she signed up for, the others is straight up either manipulated or scammed by Ryo.
Ijichi Nijika
Reason for participating: Some freeloader used her name for investments totaling hundreds of millionsYamada Ryo
Reason for participating: 45.6 billion in debt. Plenty of people are out to hunt her down.Hiroi Kikuri
Reason for participating: Ran out of money for boozeKita Ikuyo
Reason for participating: Ended up as a loan guarantor for an acquaintanceGotoh Hitori
Reason for participating: Someone gave her a white piece of paper as thanks for the karaage and she placed her seal on it.
In Japan, documents are usually stamped with a personal seal instead of signed. The original uses 実印 (jitsuin), which is a registered seal used for legally binding matters