Floor 15's Hidden Piece

"Hmm."

I’d cleared the floor, but I hadn’t been transported to the room of rewards.

In other words, just like on Floors 5 and 10, there was a hidden feature on Floor 15 as well.

"As expected."

Hidden pieces had appeared in the previous boss rooms on both Floors 5 and 10. It wouldn’t make sense for there to be none on Floor 15.

Since I’d expected it, I wasn’t all that surprised.

[Would you like to move to the room of rewards?]

As if it had read my mind, a message appeared before my eyes.

"No."

If something was hidden, naturally, finding it should come first...