Lacking Energy in Their Food

Krune looked at the box of grapes, asking, "These are Tier 1 Essences?"

"Yes." Wrister nodded as he explained, "Based on what we had determined through centuries of experimentation, we are able to gain a kilogram of weight per day at most. Beyond that, the effect of the Essence simply doesn't take effect even if we consume a second or third one. As for Tier 2 Essence, its effect lasts for three days, and during this time, we gain a kilogram in weight every day for three days."

"I see." Krune nodded before asking, 'Was Gehen applying their effect in the Development Spheres? Now it makes sense as to why he was that ridiculously powerful even in Layer 3. Even though increasing weight shouldn't be possible like on Layer 2, he must have figured out a method to increase the limit.'