Feeling guilty? Not at all! They should be happy it was Narukami the one who stole, ehem, borrowed them without giving them back.
Most of the items in the bookshelves were swallowed by the expanding shadow with Narukami as the source. It was as though the darkness itself erupted and swallowed the whole storage room.
Narukami's space storage was enough to store an entire continent. Let alone these materials.
In consideration of this, Narukami remembered that he didn't have to ask the staff member where Eyes of Sceptre was.
He could store these items in his space shadow and then search for the said material.
Not only would it save time, but it was also efficient too.
Regardless, it had already happened and it wasn't bad to take a stroll once in a while.
Narukami went to the bookshelf of the said material and scanned the long bookshelf. Every time he walked, materials from top to toe disappeared as they were swallowed by the dark shadow.