The nobles of the Emperor’s faction barely managed to enter Halo’s estate, just shy of succumbing to hypothermia.

As they stepped into the lobby of the lord’s manor, they unconsciously flinched. The warm air that greeted them was impossible to believe for a place so far in the northern reaches.

The soothing warmth that felt like it could melt their frozen bodies was radiating up from the floor.

Having spent the night battling the harsh northern winter winds, the nobles' faces flushed red. Their fingers and toes tingled as clear snot dripped from their noses.

"Even during winter, the manors in the central regions are ice-cold... What kind of trickery is this?"

Duke Quantis exchanged a glance with Viscount Lindo. The viscount, who appeared just as perplexed, glanced around nervously before exclaiming, “Ah! Could it be? I heard that Halo started a heating appliance business last winter.”

More precisely, it was called an "ondol boiler."