[Bonus chapter] Captain in the Sea (6) - Final Killing

The underwater city was vivid, with mermaids, tritons, and small sea beasts everywhere. It was a magical place, something Damian never thought he would find.

Most impressive was that a few mermaids and tritons explored other tower levels. Not all levels, a few only, and the only ones who could do that were the high-ranked, like Kaia, the daughter of the triton king. But still, Damian thought that all living things were trapped inside their respective levels, but that was not true.

"That's our sacred lake and where our protective beast lives. It guards the exit to the next floor, and this beast returns from the dead, so it's basically immortal," Kaia said.

After Damian recovered and felt good enough to walk around without Marilla freaking out, saying he had to rest, he went to the area leading to the next tower level.