Demon's Family Bloodline

Chapter 01: Unknown Letter

Note: My AU, Read some notes  below for more information, you can also comment your suggestions so I can add some plot twist

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3rd person POV:
"Did you figured out who's that for?" Shinobu ask while looking at the letter that arrived yesterday, there was no name where it came from or who is it for but there was just a signature stamp and a "From your beloved family" note written at the left side of the envelope, which is they don't recognize and that note was also useless, they already ask the other hashiras but they just answer the same

"Who the hell will write a letter for me"

Or

"That's not for me, let's just read it"

There was only three person who they haven't ask, Tanjiro, Zenitsu, and Inosuke, well obviously that's not for Tanjiro because all of his relatives was killed by Muzan expect Nezuko which is turned into demon, then there was Zenitsu, some of them know that Zenitsu's grandfather was the former thunder Hashira, so they think it's for him, and there was Inosuke well they're for sure not for him, at least that was what every hashiras think

The three of them was send on a mission and haven't back since then, well guess they'll just wait for their arrival

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"Monjiro!" Tanjiro doesn't need to guess who called him, only one person always mispronounced his name, which is the boar-head-mask guy, Inosuke

He doesn't know why Inosuke can't pronounce his name correctly, which made him think sometimes if his name is complicated or what, because every time the guy will called him by his name it always mispronounced by something like "Monjiro" or "Kentaro" or "Tentaro" the guy even mispronounced his whole name once by calling him "Kamaboko Gompatchiro" which is sound hilarious for him, sometimes he even think the guy purposely mispronounced his name for fun, or maybe the boar-head-guy doesn't really good at remembering names, except Shinobu

"What it is, Inosuke?" Tanjiro ask while taking Nezuko outside of her box, it's already night so they decided to find the nearest Wisteria House where can they stay for a nigth, and Lucky after their crow said where's the nearest one, they decided to come over

"When we will go back to the Butterfly Mansion?" the boar-head-guy, Inosuke ask 'out of the blue' and surprisingly calm, well he's usual Act like a wild Boar

"What the- Who are you!" the Crybaby-Pikachu, Zenitsu ask prending to be terrified by the suddenly calmness of the wild-boar, who will not, the guy just tried to use Zenitsu as a bait in a demon back then with a crazy smile plaster at his face

He didn't even hesitate back then, and tied Zenitsu up-side-down at the tree, then put a gag on his mouth to stop him from wailing and shouting, well Tanjiro tried to stop him but, after a back and then argument he also give up, and just agreed with the crazy plan, while Zenitsu feels betrayed

"Tomorrow Morning, we already finish our mission here" Tanjiro said tho he was also curious why the wild boar ask suddenly, but he just ignored it thinking that the boar just missed his Mother figure, Shinobu, then continued walking in peace with his sister holding his raspy hand

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"ZENITSU!" Tanjiro shout at his friend name after being throw by the demon, they were heading toward the Wisteria House when they unfortunately end up in a Demon's lair instead, and somehow this isn't a normal demon it's a lower moon, part of the twelve kizuki demon and not only one, they are fighting two lower moon

"I'm lower moon five, you can call me Kyogai" the tall, muscular, humanoid demon, introduce him self after throwing Zenitsu, he has a grayish skin, black hair, razor-like teeth, pointy ears, blood red sclera, deep blue pupils and hidden irises due to it being rolled up to the back of his head. His right eye had the Kanji of the number Five, which signified his position as the Lower Rank Five of the Twelve Kizuki

his stomach, shoulders, hips, front chest and back all had drums protruding from them of which he uses for his Blood Demon Art, The fact that beating the drums on his body caused his entire mansion to rotate while also dealing damage made for a tricky opponent

"I'm, Lower moon Five, I'm close to the upper moon six, do you think you will able to escape nor beat me?" The humanoid drum demon, Kyogai said taping the drum on his left shoulder, making the room rotate

'this is bad, he was strong, Inosuke and Nezuko was send to the other part of the mansion, I'm sure they are also fighting a strong demon, and Zenitsu was unconscious, what should I do?'

Tanjiro ask his self, he wasn't sure if Inosuke and Nezuko are together at this point, but somehow a smell of another strong demon was still visible to the room where they are, and he was sure that it wasn't a weak demon at all