Boris had been particularly side-eyed for his last name. He doesn’t know why his family has this last name, and kind of wishes people didn’t see him as creepy because of it. Even if he doesn’t look creepy at first glance, suddenly, to most people he’d become creepy because of the last name. He’s kind of shy and awkward, although he is strict, especially when it comes to food. He doesn’t like his family eating junk food all day.

When Boris first met Kayoko, he had already thought she was gorgeous, but didn’t think he’d even see her again after this encounter. He also found her two children to be very cute, and figured she had a husband already since she had already had children, until she had mentioned her husbands death. He felt sorry for her, and sorry that the kids didn’t get to grow up with a father anymore. 

During the checkup, Kayoko had seemed interested in him. Especially with how kind he was and how he calmed down Ronald during his moment of panic, even giving him and his sister a toy and a Lolipop. He’s the one who even gave Ronald the nickname “Ronnie.” 

Now that Kayoko and Boris have had children together, he feels upset that Ronald and Anita aren’t close with him anymore. He wishes he could be home more often, but he has to work to provide for the family.