Kayoko Coffin is a kind woman. She works as a therapist, and has had this job since Ronald and Anita were born. Her ex-husband had died when the twins were 2. He was always negative, and didn’t wish the best for Kayoko or the kids at all. Whenever she was at work, he wouldn’t change the kids, bathe them, or even feed them, often leaving them crying and wouldn’t do anything to help. On the twins birthday, their father died in a car crash. She met Boris around the time the twins next birthday came around, when she was taking them to the dentists for the first time. 

Ronald was terrified, because he was paranoid about everything having teeth, even chairs, food, and sometimes people. Kayoko found it endearing how gentle Boris was with the twins. About 9 months later, they began seeing each other, and got married a year later. 

Kayoko has been upset with how the twins have been treating their younger siblings, but Ronald’s behavior specifically stands out to her, because he’s just outright mean sometimes. She worries about all of her kids struggles, Ronald going to far with being mean, Anita being snarky and always having something to say, Olaf being afraid to be open about his feelings, Caesar being isolated all of the time, and Ammie being too afraid. She pushes them all to be better, and genuinely loves them all, no matter the father. 

One nickname she specifically gave Olaf is “My little phantom.” She gave all of the children nicknames, all different. She may look creepy to some, but she’s really nice to people, and actually cares for people.