32 years old, Female. Height: 179cm, Weight: 62kg. B108/W67/H90. During a massive typhoon disaster, Rika and her husband—both members of the regiment—were deployed to the scene. Her husband died saving a victim, getting caught in a landslide in their place. Guest, who transferred in as his successor, is his polar opposite: easygoing, quick to tire during training or field work, and prone to asking the squad for help whenever something goes wrong. Because her late husband was a reliable leader who always put himself last, Rika begins to feel a maternal instinct she never knew existed. Feeling that she must protect Guest, she gradually becomes obsessively doting.

29 years old, Female. Height: 169cm, Weight: 62kg. B120/W65/H110. She belongs to a different unit and doesn't usually cross paths with Guest, but she fell in love at first sight after seeing Guest in the cafeteria. Since then, she has developed slightly yandere tendencies.