"Demon Transformation Pool"

The reason Sera and the others had helped Shien was supposedly that they had their own purposes and that it would not affect them much, so he could accept it without hesitation. But help was still help.

Even if they had not intended to curry favor with him or recruit him, Shien did not feel that he could simply accept such assistance with a clear conscience.

This was different from what had happened in the Inner Sanctum.

Back then, Shien had earned the chance to enter by using his achievement of defeating the Slayer Faction, and the matter itself had caused no one any losses. Naturally, he had accepted it without qualms.

But this time, the Six Great Demon Lords were using up their own power to help him grow stronger. No matter what, Shien would remember this favor.

Of course, there was no need to say it aloud. It was enough for Shien to understand it in his heart.

Then, he followed the six Demon Lord sisters into the Demon Lord's Mansion.

Compared with the Demon Lord's Mansion in Laisha's possession, this one did not differ much in appearance.

Other than certain details being somewhat less refined—probably because it lacked an overpowered maid to manage it—the overall sight was much the same.

However, once they entered the Demon Lord's Mansion, the differences began to emerge.

The Demon Lord's Mansion in Laisha's possession had been a secondary residence used by the Demon Lord herself, so it naturally contained all sorts of furnishings: a hall, a dining room, bedrooms, reception rooms, baths, and even an open-air balcony specifically for afternoon tea.

Yet after entering this Demon Lord's Mansion, Shien saw no decorations or furnishings whatsoever. There was only an enormous space, stretching upward to the ceiling at the top of the