In the library's anteroom, they find Natsuno's stalker Fujimaki Hotaru--her classmate Osawa Hami.
She and Kazuhito had once exchanged promises--that she would become an author and he would be her first reader. Having become an author, Hami returned to see Kazuhito. "Welcome home, Kazuhito-kun."
and she turned out to be someone 
you knew a long time ago...
y como resultó ser alguien que conocías...
e acabou que era alguém que você
 conheceu há muito tempo...