this has to be the longest thing i've written in my life ;p

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Akame spent the following days working, training and experimenting. He discovered a few useful things to spare some blood. The idea he had a few days ago worked perfectly. Basically all he had to do was to concentrate the outer layer of blood and fill the inside with normal blood, that way his attack did some damage but didn't waste all his blood.

the most interesting thing however happened a 3 days ago. He was going to train in the forest when he came across a wild boar. needless to say that a wild boar could easily kill someone like him. The wild boar immediately charged at him, thinking he could get a easy meal. Akame barely managed to dodge the charging boar but one of the tusks pierced his leg.

The blood flowing out of Akame's leg only exited the boar more as he charged again. But the moment the boar got too close a blood red sword pierced through his body, ending its life. Akame's face was pale as he was lying in a pool of blood, but barely a few seconds later the blood went back to his leg and entered the wound again. His face soon regained color before becoming redder and redder. Soon his body began to hurt more and more as his skin turned more and more red. A few seconds later blood began to come out of his pores and his skin was beginning to burst and break at multiple places.

He had never felt a pain like this one, however no mater how much it hurt or how much blood he lost he didn't die because all the blood he lost simply came back inside, healing his body. after what seemed like an eternity, Akame felt his heartbeat go faster and faster until suddenly his heart burst. Akame spat out a mouthful of blood before it came back in once again.

However this time his body started to feel better. His heart was regenerating and in its center there was a small hole where all surplus of blood went. It would have taken an hour for all the blood to get in if Akame didn't control it himself.

his Body was healed and back to normal except for two things. the first thing he noticed was that all the blood in the dead boar's body was gone and it didn't take a genius to know where it went. In his heart there was a small pocket dimension where all thee boars blood was stored, his blood was slowly flowing into the dimension as the bear blood went out and started to flow towards his spine where it got filtered and changed into a blood identical to his own. the next thing he checks out is the pitch black mark on his left arm. The mark didn't look all that special, it wasn't doing anything special however when he probed it all he got was an empty feeling, as if it was a wild animal restricted by he couldn't get rid of.

Then, when all the blood had been filtered he send the blood that was in his heart to the mark and let it seep inside and he could feel the empty abyss get filled. After 5 liters of blood had disappeared into the mark he felt good, as if a deep hole had been filled. When he probed the mark again he could beef the blood changing, a drop of blood was slowly getting strengthened as it merged together with the other drops. it took around an hour for the mark to finish, while it was fusing the blood-drops together a few drops of a pitch-black liquid came out of the mark and evaporated, disappearing for ever.

When the mark was done fusing the blood, a single drop came out of the mark and followed his bloodstream to his spine, merging with it. Soon after all the mana in the area got absorbed by his body as the spine, as if it had learned something new, started to filter his blood, changing  it into drops identical to the one that the mark had made. Soon enough the 'new' blood started to flow to every cell in his body, changing it, strengthening it until eventually even his manapool became stronger.

Mana is a strong form of energy, but it is also hard to control, it wasn't rare that a mage got too conceited and absorbed too much mana but the result was always the same, when there is too much mana in a body it would get out of control and leave the manapool to enter the bloodstream en spread to all the bones and organs before destroying them. If you were lucky then the mana would first reach your brain and kill you instantly but if you were unlucky then it would go to your limbs first and slowly grind them into pieces before reducing your bones to dust and slowly rupture your organs. The longest process recorded lasted a few days while the shortest lasted a few seconds. The worst part is that it couldn't be cured since it wasn't an illness or injury, it was th body that was breaking itself down.Radiant saints could delay the process by healing the injuries continuously but they would need to keep healing the victim 24/7 and it would hurt like hell.

however the opposite was also true, the stronger the manapool gets, the more mana it can hold. right now Akame's manapool had grown to twice its original density. But even then it was still really weak. It could store enough mana for a basic rank one spell.

. . . . . . . . .

The next day news spread that the daughter of the patriarch, Lily was going to marry the 3rd son of the Byron family, one of the top families of the clan. The Marks family decided to hold a banquet in celebration and of course they send invitations to every important person of the clan.

Akame was sent with a house slave to buy the things needed for the banquet. He had to carry everything so the house slave didn't have to. During the trip they passed near a butcher so Akame let a few drops of his blood go take over the dead animal blood, he had already gotten 10 liter when some drops landed in a sewer and found another 200. The rest of the trip went without trouble, while he was walking the blood he took control of was crawling on the ground in a thin line and entered his body through his legs, however he made sure the blood would only form a thin line on the ground so than nobody would notice it.

Stolen from its original source, this story is not meant to be on Amazon; report any sightings.

the blood immediately got converted by his spine before entering the mark and his heart. The converted blood was as way stronger than normal blood which meant that the weapons he made would also be much much stronger. However a significant amount of mana was needed to convert the blood. Luckily Akame, unlike normal mages, didn't need to meditate to to gather mana and he could just do it while walking. However this didn't go unnoticed.

. . . . . . . .

The day of the banquet, many influential people came to the mansion and the patriarch made sure tu greet every single one of them.

"Elder Brenton welcome to my humble home"

"Elder Marks how are you doing, i think you know my wife Karol? Say how is our 'situation' doing?"

"ah yes him, nothing has changed yet and i haven't heard of anything out of the ordinary. I can send someone to check on him if you want, or do you perhaps wish to see him?"

"Yes but it would be best if our "relation" was kept secret, send him to do some work near the garden, it will be easier to keep it a secret if i am hidden within a crowd."

a few minutes later Akame came to the garden to prune the hedges. he didn't understand why he had to do it since he had done the day before but he knew that complaining and asking questions was a bad idea so he just did as he was told.

However when Elder Brenton saw Akame he was completely chocked. " how dare he say nothing had changed? his manapool is at least five times denser, what kind of moron wouldn't notice this?" he thought after probing Akame.

Akame had strengthened his body many times already and had left some blood in the sewers so that he would get a new batch of blood every night so he had strengthened his body quiet a few times already, he had a way more resilient body and his manapool was finally of a normal density.

When his manapool became strong enough he began to cultivate and right now he was at the 3rd level of the spirit realm which was pretty impressive for his age. But what surprised Brenton the most wasn't how strong Akame had become but the fact that his manapool grew this much.

normally a manapool never grows, because practitioners can't strengthen it themselves. The only way to do that was to surpass a realm or through the use of heavenly treasures. Those treasures were exceedingly rare and even prominent people of great clans had a difficult time finding any, and when they did found it it would cost a great amount of money, way more than a slave could get over a lifetime. And even then a manapool would only strengthen a bit so for one te get ten times stronger was a never seen event.

"it seems he might be useful after all" Brenton thought as he headed back inside to warn talk to his wife and the moron Marks.

But a few minutes later something bad happened in the Marks mansion. All of a sudden a fierce wind blew through the mansion, extinguishing every torch and throwing everyone into darkness. Barely a minute had passed before someone conjured a ball of light, illuminating the room and exposing the dead bodies of a few slaves and some of the guests.

Seeing the bodies everyone got in a battle stance and observed their surroundings. Knifes flew out and killed a seven guards before being followed by a a group of assassins, a fight immediately broke out and soon after the light went out again.

Seeing that he could use the occasion to flee Akame quickly went outside and looked for an assassin which didn't take too long. The moment he found one a blood red blade appeared out of thin air, he had made it yesterday after his body got strengthened, it contained 200 liter of his new blood which made it stronger than normal iron. He quickly tried to kill the assassin with his first strike and it quickly became obvious that he was stronger than him. However unlike him the assassin had fought many fights before and had some experience. Akame quickly got overwhelmed and got stabbed in the shoulder. thanks to his superior body he barely managed to avoid a fatal injury however with an injured shoulder it would become harder to fight.

Akame slashed out with his remaining arm and tried to hit the assassin who easily evaded the blow and struck again, hitting Akame's left thigh. Suddenly Akame got an idea and started to get back slowly and taunted the assassin to attack again. The moment the assassin was lunging forward he suddenly got impaled by a spike of hardened blood right where Akame previously stood. And just like that the assassin died.

Akame immediately put his clothes on the assassin's body, he then willed his blood to go inside the assassin and took control over the assassin's blood, he then formed several spikes inside the corpse and shredded several parts, including the face. he then willed his blood to enter the hair, giving it a reddish color before he left the mansion and went to the office of the patriarch. There he stole a space ring and all the money he could find inside the safe before leaving the mansion and fleeing into the city.