When Sumireko was young, her inability to express herself often led to trouble with her friends. One day, she ran from them and ended up at a strange bookshop. The woman there recommended a book and offered a suggestion to help her speak more easily.
"When returning a book, 
you must add one more."
"عند إعادة الكتاب، يجب أن تضيفي كتابًا آخر"
Bei der Rückgabe musste man
ein Buch zusätzlich abgeben.
"Al devolver un libro,
debes añadir otro".
"Al devolver un libro,
debes añadir otro".
Quand on lui rend,
il faut lui donner un livre en plus.
Nel momento in cui ne restituivi uno,
 dovevi aggiungerne un altro.
"Ao devolver um livro,
você deve adicionar mais um."
«Возвращая книгу, добавь одну свою».