As time kept on passing more slower minute development kept on happening around the place signifying that Serena was successfully tiering up. Which made both Zash and Serena happy for her. The only downside was their friend is no longer around them. At least physically but mentally the bond was there.
After 700 more years Zash's Body had healed up to cope with reaching the last stage of Core Formation. While he could rush things along with Sylphia's need of 3× the excess energy and along with Serena's advancement and the power needed for her body's and island's development were the priority and they both didn't mind the wait and after 700 years of constant release of essense by both Sylphia and Zash they stopped on a midnight and could sense someone approach them.
( In all that while Serena had forgotten to let the water gain it's maximum capacity of healing properties. Which resulted in Zash's longer recovery standards)
It was a Tall Lady equal to Zash and Sylphia's height but she had, Long Dark Black Hair unique to herself which seemed to glow in the moonlight at the same time absorbing the light surrounding her, her face was beautiful and pleasant to look at, by beauty standards she was on par with Sylphia and in some aspects outwitted her by a fair margin.
They both were surprised to say the least to see her human form for the first time but we're glad she could be with them more often physically.
"Congratulations Serena !" They both were happy for her friend wholeheartedly.
As she had never left her main body of the island in a physical form, feeling outside world from her astral projection and a puppet materialization for a body it felt unique to her but she could hardly control her power as trees would snap from the roots and rocks would break apart time to time from just her standing on them.
As such it took Her 3-1/2 years to gather a decent control of her body's functions. And throughout the while Zash and Sylphia helped her completely wherever they can as she had a power of tier 7 directly handed to her along with core formation level of cultivation making her the current Strongest being on the planet. In close proximity to her island nonetheless.
Meanwhile unknown that the chaos Sylphia's core formation and the tremors in the sea they had caused had attracted a tier 6 god's attention. He was God (Haynes Back) and had a long history of being unbearable to either god's and other species as he was notorious and couldn't be trusted and liked to cause chaos and steal things. The trouble began when he became a Tier 6 and started openly harassing kingdoms and weaker god's only to be ended up on a hitlist. ( Everyone's like that including other species if one proves to be a threat for everyone it's totally understandable for others to put their differences aside and deal with the common problems at hand ) and went into hiding as his curiosity sparked up he left searching where the tremors of energy had came from.
After years of searching he found a mistical island full of mana and energy,( while Serena was not focused on maintaining her barrier and fully focused on her body's conditions) after he was having greed for turning it into his base he spotted a person who was trash to his eyes and wanted to kill him along with other whoever might be on the island.
"Kid who are you ?" Asked Haynes only to get no response as Zash was busy with his research on a makeshift bench out in the open and had headphones on doing some research in peace .
Getting no response he decided to kill him nonetheless as he wasn't afraid of anyone here.
"Who might you be ?" And who do you think you are to Date attack Him !? And that too right in Front Of US !? " Said two voices behind his back, which threatened him to a greater extent.
When he looked back he saw two heavenly beautie's standards and while they were extremely good looking they seemed dangerous.
"Humph two ladies on a island with a mere LV 1 might I know who's in charge of here ? " And wanted to say more but was stopped when both Sylphia and Serena released their bloodlust which instantly made him want to regret his decision of coming here to begin with.
Zash too was looking at what the girls were hostile towards. Only to look at them wanting nothing more than to kill the intruder and heard them talking about the man wanting to attack him before being stopped by them, he realised how insecure he had been as he'd be killed right that instant if he didn't have Sylphia and Serena besides him.
Meanwhile Serena transformed into a big version of herself alongside Sylphia in accompanyance which scared him shitless. He wanted to make a run for it only to be pierced by Sylphia and Serena from both sides, like a bug which was the worst possible outcomes for him as a tier 6 being to be squashed to death like a tiny pest.
Meanwhile both the girls were angry even after his death after looting his corpse and taking everything useful Sylphia burned everything and disintegrated even the tiniest bit of remaining matter from existence,
They both were annoyed a mere bug dared to call their precious friend and partner a "Meager Being" their anger was off the charts at that moment even thinking about what would've had transpired if they were a moment late and went besides Zash who finally calmed them both down, after his constant reassuring them he was ok due to the both of them.
"I'm sorry it seems I was not focused enough for a time and that pest found a tiny rapture in my barriers and stumbled here ." Serena apologized as she too felt ashamed for letting such a thing transpire .
"It's nothing too worrying though is it ? I'm not angry or anything, on the other hand thank you for protecting me." It was a wake up call as he had grown too relaxed and had underestimated the threats from the outside world.
"Now that we are together and the energy seems more than enough for helping us progress throughout the end of core formation shall we start cultivation ? " Zash asked for their confirmation only to see them both excited as well.
As they sat down in the Springs which had gotten more beautiful and serene along the years, Zash, Sylphia and Serena Sat facing back to each other and kept energy's circulation going through their body and condensing their cores which was hard for them both but with Zash's guidance they broke through the first layer in a year's time as there was abundance of energy left to last them for entire way till they reached core formation stages bottleneck and start their preparation for entering the next realm.
( Throughout the while Zash and both the girls made extra runes, arrays and deception techniques to hide the island well and strengthen its might more. Along with energy collection improvement made by Zash along the while which kept supply of energys from around the world constant. ( The current world is 15× times stronger than earth combined and many areas were uncharted up till this day only from others to reap the fortune when they discovered them.)
After 25 years they all again broke through to the second base and Sylphia could feel her core getting denser and more powerful than ever before. It was to the point she even wondered and always wanted to quell the urge to check her current Stats but held on and kept pushing for breakthroughs again and again with Zash and serena.
After another 1000 years Zash's meridians had healed up enough to heal up 50 % and along with that they had reached their bottleneck at the last stage of core Formation which was like a different feeling for each of them entirely, as each of them could feel other's emotions had Essenes, mana and unknown Pure energy from the island's core. It felt like cheating even Zash was amazed at the results.
" With such power I can Totally wipe out kingdoms and can utterly crush my previous self within One move ! " Exclaimed Sylphia and was failing to describe how to feel about this as this power was intoxicating and there are still levels above it along with her partners leveling up at the same time as well. But all good things came to an end as the energy which was in excess was nearly depleted and though the island gathered energy from the whole world and they too expelled most of their energies for 700 years before it was mostly used up and they may take more time along with time taken to stabilise their foundations.
"Yawning Zash got up and layed down properly letting the water soak his body and was laziness around for a bit for the first time after a thousand years.
( Bear in mind he could become a god in less than a 100 years going solo and taking the quick way with herbs and other factors along with facing tribulations on the way. The progress was many time slower if he chose to dual cultivation but now he was dual cultivating with 2 people nonetheless who were stronger than him to begin with such is the cause for their slow but steady progress still it can't be called slow as their family was abnormal in this case to begin with! With each generation surpassing human understanding and ascending one after another the ancient clans and nations along with extraterrestrial life was already stunned when his Grandfather, Grandmother became god's along with his parents while many old monsters were stuck in the same realm for a few hundreds of thousands of years only to see someone so young ascend before them and so did his descendants. Needless to say many mass sucides occurred throughout the world "due" to Zash's family)
"Shall we again expel excess energy for progressing further ? "Sylphia asked as she wanted to get more strong quicker.
" Remember Sylphia it's never nice to Rush things as doing so will be extremely harmful while never underestimating cultivation you should relax every moment you get a chance, well for the time being we can expel our excess energies while I'll make something which will hold our energies more better and gaining us more benefits if everything goes well we'll successfully break through after a few hundred years" replied Zash to ease her worries.
" I'll keep that in mind. Now what to do in the meantime ? And please stop the suspense and tell us already what you are planning on making." Sylphia inquired pouting.
Zash said nothing but had a smile on his face and kept lying in the water and kept his eyes closed throughout the girls insisting him to tell what he had planned.
"It's no surprise of I just simply say it. Isn't it ? " And stopped without saying anything else. Even the girls understood they aren't getting anything out of him.