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."
We should be prudent in our use of 
limited resources of paper and ink, too.
También hay que ser prudentes con los 
recursos limitados como el papel y la tinta.
Devemos ser prudentes no uso 
dos recursos limitados