My Upgrades Are Invincible

Finally with the fog clearing from me leaving the world of Harry Potter I was left atop the building I left from previously in Demon Slayer and it looks like time certainly passed after I left this world as it was daytime like when I left the HP world.

Just to make sure of my thoughts I pulled out the Resurrection Stone and examined it to make sure it was still viable to use outside of its home universe as it would be a major pain in the ass if they were like infinity stone's and were literal paperweights out of their home universe.

-Resurrection Stone- Pulls and temporarily binds shades of the dead to the living world, warning will cause discomfort to the souls brought back as they have nothing other than the formless mana binding them to the living world which will not protect the soul like being bound inside a body or even just an object. - Platinum+

Hmm still some room for improvement though I don't plan on fusing all the hollows into one object as my neck is already taken with the eldritch necklace lengthening my lifespan and giving me a smattering of space manipulation abilities when I travel.

As for the death stick... "Fuse" I called out and the wand turned into silver light and merged into the handle of my sword making me grin as the somewhat bland black magic clothe handle lost its wrappings and left a beautiful black furnished wooden handle that seemed to swallow the light around it.

Magic Swallowing Sword- Due to the massive amounts of divine materials fused haphazardly into the sword, it has the ability to absorb magic around it whether it's from ambient nature or hostile mana in general. Has the ability to manipulate a variety of elements and by merging the concept of the first wand into the sword, it has the ability to cast any magic even bloodline magics simply by tasting the magic to allow the sword to develop a copy of the original's mana signature. Lasty it can also change its length from between a half a meter to five meters long - Starlight-

Wow my sword finally broke the barrier into Starlight tier from Diamond tier, and even better the size change will make this far more convenient for me if I want to have the sword sheathed at my side though honestly keeping my sword drawn within my space ring and just making it appear in my hand mid swing has been extremely convenient in battles.

I then fused the invisibility cloak into my armor, and it was both great but still somewhat underwhelming as it was still Diamond- rank afterwards it gained a total immunity to passive scrying. Although it wasn't a good combat application like invisibility, having immunity from passive scrying would protect me from gods or the will of worlds realizing I was foreign to there worlds on the surface.

So, it would open a number of opportunities to me as now with this immunity I can rest easy going to example the Nasuverse and not having to worry about Gaiea or Alaya just erasing my dumbass as soon as I pop in.

As for the stone... I left it be as I didnt want to possibly mess with the functions of my gear, plus, I think the stone will be best left in Freya's hands later on as she has a divinity over the dead so she will know what is best to fuse this into for the best results.

-

After setting all my gear up, I went back to Butterfly Estate to see what Shinobu was up to.

"Thats it! put your back into its boys!" I heard a mischievous voice call out and I deadpanned hearing the toxic tone of Shinobu goading the stupid trio of boys into working themselves into exhaustion like she attempted to mess with me as she taught me her breathing style, but my level four adventurer stats laughed her mortal trials and she literally threw her hands up in frustration after I was able to blow up one of her larger urns after a couple days with my internal breath strength.

"Shinobu you better not be bullying my stepson!" I called out making Shinobu fall off her perch in surprise along with Tanjiro and surprisingly Nezuko squawk in surprise at me showing up out of the blue.

"Oi who is the pretty boy! You sure he isn't your mothers boytoy." A young man wearing a boar head said and I slowly turned to look the brat.

"What's your name newbie."

Taking in the occupants of the people working out or hanging out in the yard I saw Tanjiro, Nezuko, Zenitsu, Inosuke, and more importantly I saw Shinobu and Rengoku sitting on the side with Shinobu giving me a glare for startling her.

"My name is Inosuke the Lord of the Mountain Haha!" He laughed out proudly and then he fell over as Tanjiro headbutted the shit out of him...

Like what kind of attack needs front flip and half to headbutt the life out of someone. No the real question is how the hell is Tanjiro's head that sturdy as not even my own is that sturdy.

"Don't disrespect Jake he saved my family's lives!" He yelled with Nezuko nodding fervently and as I looked over the duo, I noticed the boy had his own Nichirin Sword but very surprisingly it wasn't black like it was in canon, instead it was red which certainly surprised me.

"Oh Nezuko you already got a Nichirin Sword good job." I praised making the cute girl preen happily as I teleported close and gave her a couple head pats in congratulations

"Yes Father. Lady Kocho has taken me as her apprentice as I fit her breathing style very much, so she is grooming me to be the next insect, Hashira." Nezuko said proud of her hard work, and I was also filled with warmth hearing this as I had accepted my place as being a surrogate father for the younger children of the Kamado family.

Thankfully in my original life I lived with my Aunt and Uncle who were workaholic's and basically dumped their toddler on me and my cousin to raise as they worked while we were in online school so we were always stuck at home. Basically raising a child wasn't anything new to me.

Plus raising these children came with a submissive woman who simply wanted the best for her children and had zero compunctions in keeping me satisfied.

I coughed loudly making Tanjiro froze and stop trying to put the ornery Inosuke into a headlock as said teenager scream incoherently. "Right well Inosuke was it? Stop acting like a wild animal please."

"Fuck you Half-Baked!"

My name is Jake...

I wordlessly walked over and with one hand each I separated the teenagers and as soon as Tanjiro was out of the way I grabbed the struggling boar headed shit and spun like a discus thrower and I could feel my metal boots burrowing into the ground as Inosuke was flying in the air from our spinning inertia exceeding his weight.

"Say Uncle you little twerp!" I yelled as Inosuke cried out that he was about to puke in his boar head.

Finally, after a few more shenanigans Inosuke Zenitsu and the others went off to finish another part of training with me explaining I had something important to talk to the Hashira.

"Shinobu, I managed to get the item I promised that could call upon your sister." I said making both Rengoku and Shinobu stagger in place.

Shinobu bit her lips in thought before nodding with her eyes closed. "Please call upon her and I told Rengoku about our deal knowing how much he cares for his mother..." She paused for a second and before Rengoku who was obviously about to say something she continued. "But he is torn on whether he would be willing to go to another world and leave the rest of his family."

I looked to Rengoku and he nodded making me hum in thought before responding. "Alright Rengoku that's fine but bear in mind, I have nothing against the rest of your family joining my Familia as your bloodline is obviously tuned into fire magic." Seriously a whole bloodline basically bred into using the fire breath style would be a huge boon, and I am sure they would get a skill upon a falna being put on them like the Crozzo bloodline back in Danmachi.

Rengoku nodded before responding. "My father has sworn to leave his Hashira days behind, but my brother would love the chance and I know my father would give anything for his wife and my mother to be returned to us."

Yeah, the whole family fell apart after she died...

Shinobu's expectant look of obsession directed to me was already feeling rather heavy so I didnt waste any more time and put the Resurrection Stone within my hand and rolled it between my fingers. "Kanae Kocho, come back to the living world." I said dramatically as they couldn't see the little river rock being rubbed between my fingers plus, I bet they would think I was playing a prank if I told them the nondescript river rock could bring the souls of the dead back to the world of the living.

Just as I said my little calling a collection of mist formed and solidified into a gentle beauty with limpid purple eyes and even with her wearing a simple white robe, her gentle smile seemed to light up the room as she only spared a moments glance as her summoner and instead focused on Shinobu.

"I have missed you little Shinobu." Kanae said gently with a soft voice.

"Big Sister!" Shinobu cried out and then she showed her mastery as the fastest Hashira as she dashed forward, and I felt a solid chunk of my mind simply evaporate as I instinctively overfilled Kanae's form with mana allowing her to temporarily become solid and grunt in surprise as Shinobu's shuddering frame buried her face into her sister's breasts.

"Rengoku lets go talk about the sun breathing style while they catch up." I said quietly and he took a deep breath obviously extremely excited to see proof of my words.

"Yes lets go." He nodded and we made our way out as Kanao ran inside and joined the hug.