Hinako Yaotose 八百歳比名子
A High school girl living a quiet life in a seaside town, but she feels somewhat detached from her friends during the summer months. She lost her family on a trip when she was six years old. She has a deep, logical, calm and introverted personality. Rarely, she attracts aggressive monsters to her, including sea monsters from the shore.
She seems to have signs of PTSD.