
Enma, Shouta, Hamasuki and Selena were taken to a place with sandy soil surface, the atmosphere was not bright but always dark like night, no plants or animals only there was a gust of wind and sand.
"Three Devils and one Demonite!
Do you know where it is a part of ourselves?" alios asked while sitting in the air
"I've heard of it!
Mana is very important for creatures like us because Mana can make our bodies always move and grow rapidly!" reply Hamasuki
"Where is the core of our lives!" reply Shouta
"Food!" reply Enma with a confused expression
"Mana is the much needed energy for every race in the left Earthleen!" reply Selena
"The answer you four have is correct but please know that Mana is not only the essence of life for our race even Elves, Elves, Spirit Spirits need the same thing but for their race, too, there was something very unique and ingrained in their souls that was the Consistent Circulation of Mana!" say Alios while showing Mana Consistent Circulation simulation
Alios explained that Mana Consistent Circulation is a Mana rotation on the body that moves stably and does not change, essentially Mana Elves, Elves and Spirit Spirits would not be fickle so that was the origin of the long life of the three races or arguably immortality. However, Demonites, Demons, Evil Spirits and Abyss had no such Consistent Mana Circulation but rather Abnormal Mana Circulation.
The Abnormal Mana Circulation within the body of their race was an abnormal rotation throughout the body and moved irregularly so that the release of the amount of Mana would be extremely excessive but this Abnormal Mana Circulation could their race continues to grow. However, it has a side effect that is the burden of life so that their race has got the determination of the day of death.
Therefore, Ragnarok currently needs a successor even he is in a hurry to carry out his duties that he always holds from his creator. Ragnarok's current age is 100 years more and will soon reach his death.
"What, Ragnarok-sama will die!" hamasuki said with a surprised expression
"I just found out about this!" shouta said with a panicked expression
"He has no time left now we have to realize his duty!" alios said with a serious expression
"I'm going after Ragnarok-sama!" enma said with a serious expression
Everyone laughed when they heard that remark from Enma the instant Alios started to seriously discuss their training which was a training to make their Abnormal Mana Circulation become faster so that the development became a rapid rise from normally.
"I want you to continue to bring out the Mana that is in the four of you until it runs out but don't stop for a moment. I want every second of Mana that starts to accumulate directly you guys release with zero Mana goals on your body!" alios said with a serious expression
Hearing their training that required making Mana run out in the body instantly made them fear death.
"Isn't that the same thing as death?" hamasuki asked with a panicked expression
"You must be kidding me!" said Shouta
"Could he die?" ask Enma who doesn't really understand what Alios is explaining
"That's why I want you to play the core of life as a tool to help you develop, Where it is oxygen or our lives therefore I want you to fight desperately to stay alive with Zero Mana. Keep in mind you will feel terrible pain when you reach Zero Mana so prepare yourself right now!" shouted Alios
Enma without a second thought instantly unleashed a high-level Magic that ate up a lot of Mana, Hamasuki was slowly depleting her Mana while thinking of ways to cope with the training she had obtained, Shouta kept out Gokencho to exhaust his Mana and lastly Selena spent her Mana by making thousands of black fire arrows.
A few minutes continued to pass until the four of them finally reached the Mana that he could no longer take out but had yet to run out. The four of them felt a terrible exhaustion as if their lives were on the edge. Hamasuki kept taking out her Mana until it reached Zero Mana then she was sprawled with her heart not beating anymore.
"Hamasuki!
Alios-sama, let's stop this exercise!" shouta shouted
"Stop where I might do it, Shouta spend your Mana like them!" alios said with a serious expression
Shouta sees Enma and Selena also sprawled with her heart not beating then Shouta dares to spend her Mana until it touches Zero Mana. Shouta suddenly felt an instant recovery of Mana's survival instincts made a slight circulation of Mana move directly to his heart so that Shouta came back to life.
"How could this possibly happen?" shouta asked with a surprised expression
"You did it Shouta!" hamasuki
"It seems you two understand!" selena said with a tired breath
"Enma's alive again!" shouted Enma in a high tone
"Happy you are dead once but the next training will continue to be dangerous and I want you to be able to survive the end of every training I give you so be prepared!" alios said as he flew upwards
Alios told the four of them to make a protector with their very small amount of Mana sometimes some were successful and some were unsuccessful until the four of them went back to torpor and then woke up with tired bodies and breath was breathless but Alios did not stop at all to force them to continue reaching Zero Mana.
Their training continued over and over again for five hours with their number of suspended animation 200 times until the overwhelming fatigue made their bodies completely immobile from the spot even when Alios gave out an attack that required them to take cover instantly the shield of the four of them appeared with weak power then flew their bodies all in various directions in the place but all of them did not give up on completing the training that extreme.
Alios felt a very high upward development even Alios realized something extraordinary was in Enma. His mana continued to reach Zero Mana without making him faint immediately Alios saw there was a uniqueness in him Enma.
"The child was terrifying once even his body was not suspended from torpor when it had already reached Zero Mana. I can see to his three friends that the Mana they put out will definitely reach zero and in a few seconds will return to number one but Enma seems like her Mana recovery has gone crazy even me being able to sense from zero continuously recovering to the number five in just a few seconds could it be that he has the same Mana trait as Ragnarok?" ask Alios to herself
Exercise continues until the specified day limit of one week so that during that time the four of them must survive.
Seriate...