Both boxes were long wooden crates.
But the contents of one were different-
[Name: Death Aura Storage] [Type: Other] [Quality: Secret Art] [Attribute: Storage] [Notes: After obtaining the Book of Death, the exceptionally gifted Old Sunk not only created the Death Hole to store deathly aura, but also used alchemy to contain it within the skullcap of a Hidamoor Water Monster for greater convenience. Carefully polished, this skullcap became as small as a pigeon's egg, smooth and lustrous as jade. In an inconspicuous spot, a line of words was engraved-for my departed loved ones, I would willingly descend into hell.] ... [Storage: Can hold approximately 100 units of deathly aura, but requires the Death Hole to absorb it. Current: 100/100] (Note: This is a single-use item. Once depleted, it cannot be refilled with deathly aura, but it can serve as a fine ornament.)
The long wooden crate was divided into three tiers. Two were already empty, and only the bottom tier still held ten [Death Aura Storage] items. Judging by the compartments, each tier had held twenty [Death Aura Storage] items. Clearly, either Old Sunk, the owner of the notes, or William had used them.
Unable to actively absorb death aura, they always needed external assistance when wielding the power of death.
Old Sunk had probably used more of them.
After all, as a Hunter, Old Sunk still held to his principles and would never allow himself to become a monster.
As for William?
He clearly had no such scruples. To wield the power of death more effectively, he had transformed himself into a half-human, half-monster being, and thus abandoned these [Death Aura Storage] items.
Arthur, however, had no objections to them.
Even with the higher-ranked [Breath of Death], no item suited his need for a large