Noah and King Elbas were forcing the seed to grow until it reached the ninth rank. They treated it as a normal magical plant that required nutrients to improve, but they controlled every aspect of its improvements and structure.
Initially, the dark matter that made the seed didn't carry any meaning, but the constant absorption of fuel containing Sepunia's core made it transform into something that suited her existence perfectly.
King Elbas also modified the fuel as soon as the seed's growth failed to meet his expectations. He had to find a perfect balance between its imitation of Sepunia's existence and its potential, which required many adjustments during the process.
Moreover, the jar containing fuel set the amount of power that could fall into the case. It even affected those nutrients, making them denser or thinner depending on what the seed required.