"It's not that it's not a big thing, considering it's what tied us to the world when we were transmigrated. We simply have different attitudes toward our situation. But you don't need to let it worry you, because we'll be sure to keep our books safe."

It is true that it would be very bad if they broke and damaging them would not exactly be good either, but you can't fret too much about it or you won't be able to relax.