Past Recollection

Purgatory.

The Reverse Tower (逆塔), said to have been built by some eccentric architect in ancient times.

Towers like that have themes in groups of ten floors.

The ten sins humans are born carrying, as recorded in the ancient scriptures.

‘Ten Evils (十惡)’

The evils humans commit throughout their lives.

Among them, the theme of Floors 81 through 90 was [Regret].

‘······Cold.’

Regret is where memories, recollections, and imagination are organically connected.

Perhaps because of that characteristic, the ten floors were bound together as one...