ono kyoko

First appearance: Chapter 26
Name revealed: Chapter 77
This whimsical, 28-year-old English teacher with the physique of a child accompanies Yasunaga on his visit to Ryōzanpaku. She assists Boris in becoming more sociable as he helps her maintain discipline in class since most of her students tend to ignore her. Her gullibility is evident when she shows no concern about Kenichi spending the entire class period "in the bathroom." Interestingly, both Kenichi and Boris humorously speculate that she might secretly be a Master Class individual due to her uncanny ability to sneak up on Boris without him noticing and her serene sleep during the Russian troops' attack on the campsite.