Yoshida Nao (吉田楠央)

Kanna is a girl who can see ghosts. One day, a mysterious individual wielding a shinai who only she can see appears before her, and, for some odd reason, begins following her around. Kanna dubs him “Big Bro,” and through this strange relationship, she slowly begins to grow…

Machiko fell in love at first sight with the tears of an incredibly beautiful boy who was trying to end his life. "With such a pretty face like yours, you should become an idol!" she suggested. From that moment on, Machiko's life would never be the same... (Source: MangaPlus)