Saki met Kanon, classmate who is severely hard of hearing.

Kanon is able to lip read, and, after interacting with Saki, who was seated next to her,she gradually is able to expand her life in high school.

Saki also becomes acquainted with Rinne, the younger sister of Kanon,who is considered to be “a ugly person who has something to hide from her sister.” Even so, she opens her heart.