Year 1999:
A man in his early twenties closed the book in his hand, the title of the book was Naruto, and he had just finished reading the whole book. He had a far away look on his face as he mulled over the story that he had finished reading. Looking at the coverpage of the book again, he murmured to himself "Chakra, Usumaki, Uchiha, Hyuga, Sarutobi, Nara, Yamanaka, Akimichi, Inuzuka, Aburame, Sarutobi, Land of Fire..... The power system and names that I had almost forgot."
He started to chuckle, then slowly it started to evolve into a full blown laughter that made him tear up. After few minutes, his laughter receded into chuckles and when ever he looked at the book in his hand, he snorted in between his chuckles.
When he called down, his mood became somber. Looking at the book again, he said "Is the author someone like me? Someone who got reincarnated on Earth from Elemental Nations?"
Sighing, he shook his head and with a wry smile said to himself "I didn't see the name of my clan or the other clans my clan had alliance with or enmity. Like the Senju, Hogoromo, Kaguya, Yuki, Fuma. Where are those clans? Is the mangaka going to introduce them in the future? If so then I can't wait to read this manga, after all reading about the possible future of your world is good."
Just then, the door to the room the he occupied opened and another man in his early twenties came in with a back pack on his shoulder. The newcomer nodded at him and said "Isshin, have you finished your project report?"
Isshin, shrugged his shoulder and showed the manga to the man and said "Nope, I was reading this manga. What about your ne manga, did you start it? If you did let me read it, please Noriaki."
Noriaki just nodded and looking at the Manga, he said "I have started, but I'm not going to let you read it until I have finished ten chapters. And that's a good manga, I have a feeling that it will be a big hit."
Raising an eye brow, Isshin said "That's good to know. I'll try to read every chapter of Naruto."
"You would read every chapter just because of my feeling?" Noriaki asked as he placed his backpack near a table where sheets were strewn across with drawings of clothes.
"You said the same thing with One Piece last year. And now look at how it's single handedly supporting the Shonnen Jumb." Then looking at the manga in his hand, Isshin said "Tell you what. I bet that this manga Naruto, One Piece and the one you are writing will be the pillars of new generation manga."
Noriaki smiled and asked "Is that your gut feeling?"
"Yep. Just like you, I have a feeling that Naruto, One Piece and your manga will be the three biggest contributors for the profits of Shonnen Jumb." Isshin said with a serious face.
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Year 2020:
A man in his mid forties was lying on a bed with IV tubes, oxygen mask, heart monitor connected to his body. His breathing was shallow and after a few minutes, he stopped breathing, the heart monitor showed a straight line. Observing this the doctor wearing contamination suit told the nurse next to him "Time of death, 1600. Does the diseased have any relatives?"
"None, doctor. His emergency contact is Kubo Noriaki, also known as Tite Kubo." The nurse informed the doctor.
The hummed and said "Inform him that Captain Shiba Isshin had died due to Corona Virus."
"Yes doctor." The nurse replied and covered Isshin's face with a white cloth, indicating that he was dead.
Since the whole country was under lockdown, the hospital staff prepared for incineration of the body. But they also placed him in the morgue so that his close friends could see him for one last time.
Almost twenty people came to see Isshin, most of them were wearing army uniform, they were his subordinates from JGSDF. Few of his college friends also visited to see him one last time, the final one to arrive was Noriaki, also known as Tite Kubo, Isshin's best friend and the mangaka of the manga Bleach.
Looking at the cold corpse of his best friend, Kubo said in a low murmur "I was hoping that you will hold on until the end of Bleach anime, but you went ahead first." Sighing, he continued "I'll give your namesake character more screen time in the new arc. I promise you that and I wish you luck in your afterlife."
Bowing to the corpse of Isshin, Kubo let the hospital staff to incinerate his friend. As Isshin's body was burning, the intensity of the fire drastically increased with the hottest flame in the world, blue flames.
Seeing this, Kubo cracked a smile and murmured in a low voice "The last hurrah is always yours."
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Inside a room guarded by two men wearing black iron armor with katana in their hands, was a boy of age twelve sleeping soundly on the bed. Near the boy was a beautiful lady, with black hair and brown eyes, in her hand was a babe sleeping soundly in the lady's embrace.
Suddenly, the boy shot up from his bed and sat upright, scaring the lady in the process.
"Ahhh!" As she let out a shriek, so many things happened at the same time.
The guards rushed inside with their katana drawn, the baby in her hand's started to wail, the boy with frail body looked at the lady and murmured "Mother?"
The lady's eyes went wide and she hugged the boy with one arm and kissed his temple as she uttered his name "Isshin."
The guards eyes lit up in delight and one of the guards said to the other "Sado, go and inform #sama that Isshin-sama is awake."
"Hai! Mado-san!" Saying so Sado ran out of the room in a hurry.
Seeing familiar faces again, Isshin thought to himself 'This must be heaven, if it isn't then it doesn't make sense why I'm seeing my mother and my personal guards from Shiba Clan.'
Just as his thought ended, he heard cooing noises and when he looked at the source, he found a babe in his mother's hands. Seeing the baby, Isshin thought 'I didn't have any siblings when I died in the battle against the Kaguya Clan.'
"Isshin! Son!" Shouting at the top of his lungs, a man with black hair, brown eyes and subtle beard came barreling into the room and crashed straight on to him.
The sudden pain he got from the crash with the man confirmed one thing for Isshin 'This is not heaven or hell! This is the Elemental Nations! I'm back to my own world, to my own family! And I'm back with knowledge!'