[As for the X-rank Lifespan Burning Prodigal, its side effects in using it were great, but the power it granted was even greater!]
[Its passive ability allowed you to possess five times more lifespan. It was to the point that with your lifespan approaching a hundred million years, you didn’t even know the concept of old age, let alone a natural death.]
[Aside from the passive ability of Lifespan Burning Prodigal, its active ability was even more outrageous. At the cost of consuming one hundred years of lifespan per second, you could gain power ten times stronger than you currently have!]
[Moreover, if you were a "prodigal" enough, you could even consume lifespan to enhance just one attack of yours.]
[From your estimation, to deal with an attack comparable to an Initial Celestial rank powerhouse’s, you only need to consume approximately ten million years of lifespan!]
[Although it was only one attack and defeating an Initial Celestial rank powerhouse would be unlikely, it still guaranteed that you could kill anyone below Celestial rank!]
[Of course, even you didn’t dare use it unless it was necessary. It was fine using it in a simulation. After all, the power granted by the doomsday life simulation wouldn’t include defects caused by lifespan depletion.]
[Not only you, but your train crewmates also wouldn’t have to experience that when you summon them to the real world.]
[For matters regarding lifespan, the doomsday life simulator system wouldn’t deduct anything and would just transfer the power rank, life level, bloodline rank, etc., that you all possessed.]
[When inheriting those, you all would naturally gain the corresponding lifespan that powerhouses possessing all of the above would have.]
[With all those new X-rank innate talents you’ve acquired, your power went up a notch.]
[Especially with X-rank Lifespan Burning Prodigal, at the expense of burning your lifespan, you could threaten those at Initial Celestial rank or possibly kill them if you consumed almost all of your lifespan!]
[Although this ability could only be used in the doomsday life simulation, where there was no cost for your main body, it still could be used in the real world if you’re desperate enough, serving as an excellent trump card.]
[Moreover, it’s not like you didn’t have any items or resources that could restore lifespan. You’ve already plundered the lifespan of tens of thousands of Aether rank Train Conductors.]
[The lifespan they possessed as Aether rank powerhouses was much greater in quality and quantity compared to mortals. Not to mention, you’ve already plundered the lifespan of some Wild Gods you’ve killed.]
[The difference in life levels and power rank affects the quality of the lifespan plundered. Just like how the lifespan or life force of a Starlight rank powerhouse is many times more potent than a Crystal rank powerhouse’s.]
[Although there were side effects if you were to do it wantonly, you could still acquire lifespan as many times as you wanted by treating the living beings in your world globe as consumables.]
[The lack of quality could be solved by forcefully elevating their bloodline rank to that of an Ancient Human and then feeding them with Peak Titan-grade Crystal Gem Fruits, allowing them to immediately become Peak Titan rank powerhouses.]
[Due to this, you weren’t worried about losing lifespan much. The problem was merely affecting your body and soul’s foundation due to overworking your lifespan. However, that could be solved with the Boundary Principle, Order Principle, and Wish Principle.]
[Already having a path forward, you decided to walk that while assisting your train crewmates on their own.]
[Time flew by, and another decade passed.]
[It was already the 60th year since the advent of the Terran Train Conductor Era.]
[Your Boundary Principle progressed a lot, reaching 43.906% law fragment ownership. Due to this, you brought your Order Principle, Multiplication Principle, and Wish Principle to 43.905%.]
[You’ve successfully advanced to Late Starlight rank!]
[All of your train crewmates had reached Late Starlight rank, including Scarlet Vale.]
[Due to the innate talents you’ve given her, Scarlet advanced her Wolf Principle to 40.001% before stopping, allowing her to become a Late Starlight rank powerhouse!]
[As for why she stopped, it was due to focusing her efforts on the Moon Authority, which she successfully advanced to 30.201% Principle!]
[With her Moon Authority already sublimated to the Moon Principle, Scarlet had already abandoned the Wolf Principle and made the Moon Principle her main principle to comprehend.]
[As for Morvane, Old MacDonald, Magnus, Cecilia, and Jade, they weren’t far from Peak Starlight rank. Their Principles were all either at 48% or 49%+, not far from the advancement requirement of 50.001% Principle.]
[Even Jade finally had the time to pursue and comprehend the Time Authority, allowing her to advance it to 22.643% Authority.]
[The only reason Jade focused on the Equality Principle and Exchange Principle was due to wanting to assist you further when making use of her X-rank Equivalent Exchange innate talent.]
[But in terms of Principle grade, the Exchange Principle was only mid-grade, while the Equality Principle was high-grade, but it didn’t fit her much.]
[Jade’s Golden Time spirit avatar was fully related to time, while her Bloodline Magic: Eternal Dominion, was related to eternity. Eternity was related to time, so her affinity with time was actually greater than her affinity towards Equality and Exchange.]
[Not to mention, while the Time Principle was a high-grade Principle, there was still a gap between those of the same grade. Something like the Equality Principle was on the lower end, while the Time Principle was on the upper end of high-grade.]
[Letting Jade reach 50.001% on both the Equality Principle and Exchange Principle was more than enough, so you had suggested that she start comprehending the Time Authority.]
[You knew there wasn’t enough time to advance to Celestial rank, so you and the others focused on bringing the Principles you’ve all needed to 50.001%.]
[After all, as long as a Principle reached 50.001%, then it would allow the Starlight rank powerhouse to have a monopoly over it, ensuring that no one using that Principle could usurp them.]
[Aside from that, you’ve also successfully comprehended the high-grade Adaptation Authority, reaching 23.098% law fragment ownership!]