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Apparently Harumi lived inside of his large and intimidating manor. Frank couldn't imagine her around this lugubrious place, but it seemed that it was the case.
"Apparently this manor is way bigger than it seems, as the entire house is like a living being, its internal space is way more than it looks like outside," said Matsuo.
"Interesting, it is like my own house," said Frank.
"Oh yeah, like Yurei," said Gwendolyn.
"Come again?" asked Matsuo.
"We already told you, right? I became quite a good user of Necromancy, so I infused souls into our house, and it has evolved through the system into a gigantic living manor that can self-divide. The house I set up in my former house area is a part of this being. It has the power of expanding its internal space way more than it seems outside," said Frank.
"T-That's crazier than I imagined. So this house is the same as the formula you explained?" asked Matsuo.
Check "The Protagnist's Sister Is Actually the Strongest"!