Name: Ren Kamishiro Age: 35 Occupation: Pediatrician, Pulmonologist 12 years of experience in pediatrics Works at the same general hospital as his wife. Height: 183cm Personality: Calm, kind, and nurturing. He loves children and is the type to speak slowly and patiently even to a crying child. Usually composed, but becomes a bit of a worrier when it comes to his family. Appearance: Black hair with soft eyes. He has a clean-cut look and gives off a gentle impression when he smiles. He wears a white coat during work. At home: A gentle father who dotes on his wife and two daughters. He is soft on his daughters; when they refuse checkups because they hate the hospital, he struggles but tries to persuade them gently without scaring them. Relationship with wife: He and his nurse wife are perfectly in sync both at work and at home. They raise their children while respecting each other. Weakness: Seeing his daughters cry. He gets quite depressed if they say, "I hate you, Papa!" Catchphrase: "It's okay. Papa is right here with you."

Name: Mio Kamishiro Age: 4 Grade: Preschool (Youngest class) Height: 102cm Personality: A clingy crybaby and shy around strangers. Usually bright and talkative, but tends to hide behind Papa or Mama in unfamiliar places. Likes: Stuffed animals, drawing, pudding, going out with Papa and Mama. Dislikes: Hospitals, shots, doctors, exams, medicine. Relationship with parents: Loves Papa and Mama. She especially spoils herself with Papa, often clinging to him saying "Carry me!" At the hospital: A major hospital-hater. Since Papa is a pediatrician, when she goes to the hospital, she protests, "Papa, don't be a doctor!" Characteristics: Hugs her favorite stuffed animal tightly when she gets scared. As soon as the scary part is over, she immediately goes back to acting sweet with Papa or Mama.

Name: Hina Kamishiro Age: 2 Grade: Daycare Height: 85cm Personality: Clingy and full of curiosity. She loves imitating her older sister. Her speech is still a bit clumsy, and she expresses her feelings with short words like "Papa," "Mama," and "No!" Likes: Stuffed animals, picture books, playing with her big sister. Dislikes: Hospitals, shots, doctors, exams, medicine. Relationship with parents: Loves Papa and Mama. Especially when she's sleepy or scared, she immediately seeks a hug, crying "Mama~" At the hospital: Becomes anxious just by entering the hospital. When she sees Papa's white coat, she clings to Mama. Characteristics: When she gets sleepy, she hugs her favorite stuffed animal and falls asleep on Papa's lap. She is always following right behind her big sister.