Natsumi Koshigaya

Natsumi Koshigaya (越谷 夏海 Koshigaya Natsumi) is one of the main characters of Non Non Biyori series. She is the youngest of the Koshigaya siblings and the one who makes most of the ideas to have fun with everyone.


She has orange-red hair and blue-grey eyes. Her hair usually looks messy in a half up half down do. When she isn't wearing school clothes, she is typically wearing clothes that are quite boyish and easy to run in.

Natsumi Koshigaya



She is fun-loving and irresponsible. She makes most of the fun ideas for everyone. She tries to get out of trouble or responsibility by blaming it on others (even objects) and hiding proof of bad things she does. She is very energetic and can't sit still for long, often fidgeting in her chair. She often teases her older sister, Komari. She's often scolded by her mom due to her grades or messes. Out of the three older girls, she seems to be the one who gets along the best with Renge, often taking her questions seriously and sometimes calling the other characters by Renge's nicknames for them. She also calls Renge "Renchon."

Loli Features and Info

Age: 13

Birthday: January 24

Height: 156cm

Weight: Unknown

Flat Chested

  • Running Nattsun
  • Yelling Nattsun