"My reason for not evolving to Tier V… well, it's quite simple: I can't do that. Not here, at least," Aurora muttered, looking out of the window.
"Why?" Dhruv asked, obviously wanting to know the reason.
"First of all, this dungeon is only Tier IV, which is not strong enough to support two Tier V monsters within it. If I were to evolve, I'm sure it would collapse in on itself, killing everyone inside it."
Aurora sighed as she remembered the information she had gotten after acquiring the [Dungeon Keeper] exclusive ability. Like other skills, it also provided necessary information to keep the dungeon functioning.
"What is the second reason?" Dhruv asked with mild curiosity.
"Remember how I told you that at Tier VI there is a qualitative change in mana? That doesn't happen abruptly; its seed is already sown at Tier V. Because of that, Tier V evolution takes a very long time—almost five times as long as the fourth," Aurora sighed.