Yume Suzuhara

Yume is the blind sister of Kokoro, but due to that impairment, her other senses improved. She can distinguish people and their intentions by their footsteps, and she is very perceptive when someone lies. She was five years old during the events of Hoozuki Island.

Mouryou no Yurikago
After the catastrophe took place, she was together with Serizawa's group, but they abandoned her since her blindness would be a hindrance to them. Later, she was saved by Shunsuke and eventually, ended up in Takigawa's group.