The True God of the Tower

-Bleach+Tower of God Xover-

Author's note : This is my first fanfiction, I am not really a writer but a fan of anime. There was no crossover of Bleach anime and Tower of God manhwa so I bring this story to anyone who have yearned it.

Disclaimer : I do not own Bleach or Tower of God… or any other series I might mention as my story goes forward.

Warning : An occasional grammar issue might occur. My proficiency level in English Language is just average because it's not my tongue.

Functions : "Talking." / "Thinking."

Reminder

Shinsoo is a general term in TOG. Now, for you not to be confused and to understand more of the story, you might want to be verse in BLEACH: Reishi, Reiryoku, and Reiatsu.

Reiryoku : Reiryoku or Spiritual Power is a power aligned with the spiritual sensitivity and willpower of the user. It is primarily used by spiritual beings to provide power for their various abilities. Reiryoku in the tower is called Shinsoo, formerly called Ki.

Reiatsu : Reiatsu or Spiritual Pressure is the physical force/pressure that a person's Reiryoku creates when released. Reiatsu in the tower is called Shinsoo, the aura given off by an individual.

Reishi : Reishi or Spirit Particles is the main component material of Souls and all spiritual matter. It is invisible to mortals, with the exception of spiritually aware ones. Reishi in the tower is also called Shinsoo, formerly called Mana.

Reishi Manipulation : The only limit to beings with physical body is the ability to maintain their own stamina and ability to absorb ambient Reishi.

Tower Walls : The walls are made of highest grade Sekkiseki as it negate all Reiryoku/Shinsoo protecting it from inside and outside attack.

King's Key : The only item to open the Gate and enter the Tower.

Timeline

B.T. - Before Tower

A.T. - Anno Turris

44,000 B.T. - End of Thousand Year Blood War and The New King of Soul Society

43,000 B.T. - The Meeting of Souls

37,000 B.T. - Las Noches Rebuilt and The Hollow King

14,000 B.T. - The Last Quincy Generation

7,000 B.T. - Real World Disturbance

3,000 B.T. - The Awakening of Mythical Creatures and Mutants

1,000 B.T. - The Clans of the World

700 B.T. - The War of the Clans

400 B.T. - Humanity and War

300 B.T. - Difference in Power and The Hundred Years War

250 B.T. - Humanity's Brink to Annihilation and The Conference at Seireitei

244 B.T. - Intervention of Heaven and The War of Heaven and Earth

100 B.T. - Replenishing of the Earth

50 B.T. - Gathering of the Aberrants

28 B.T. - The Verdict of the Almighty

14 B.T. - Construction of Pillars

1 A.T. - Tower of God

PROLOGUE : The Soul King

25,022 A.T : April 18

Royal Palace

Upon the throne inside the Royal Palace of pure souls, is a man, sitting and radiating unmatched power. He wears a standard black shihakushō, but with notable feature: he has two white shoulder plates crossing his chest in an X shape which held his Shikai blades in place, with the plate on his left shoulder having three sections adorned with red scales, and a white cloak with black markings tied around his waist. Beside this man's throne leaned two black blades. The small one have the image of trench knife about the same size of a man's arm and the other is a large khyber knife with thin hollowed out section in the middle. The size of the larger sword could be compared to the man on the throne if he were to stand fully erect. The name of the man and his blade has been forgotten by many people for thousands of years.

Sitting at his throne the man was thinking of how to relieve his boredom. He is in the Royal Palace for a very long time after the end of the Quincy Blood War. There were reasons why he could not return to the real world even though he wanted to be with his friends and family. His thoughts were interrupted when he heard the opening of the throne room doors. In stepped two familiar faces, a petite woman and a tall man, the woman wears a black hakama pants and a white haori with a sign Royal Guard. She is 144 cm in height with black hair that reached her shoulder and big beautiful eyes. She is also known in the Royal Palace that hold the most beautiful Zanpakutō as pure as white snow.

At the bottom stair of the throne they have stop and bowed to the man sitting to show their respect. The man on the throne had an annoyed look and sighed, "Oi, how many times should I remind you two not to bow. So what brings you two here, Rukia?"

"My, my, does the Soul King really not know why we are here today?" The man answered comically. He wears a dark coat, which sports a white diamond pattern along its bottom half, with a dark green shirt and pants underneath. His coat's design is reminiscent of an inverted captain's haori, along with the traditional Japanese wooden sandals and a striped dark green and white bucket hat.

"Eh? Uruhara-san, though Zangetsu absorbed Yhwach's power after his death I would not use it to foresee such things." Ichigo responded while fully knowing what Uruhara meant. He promised himself not to use Yhwach 'Almighty' ever again.

"Ohoho, is that so. By the way Kurosaki-kun, I'm here to tell you that..." Kisuke paused for a second and his expression became serious. "Everything is complete."

Uruhara grabbed something in his clothes, it was a white spiritual orb and he handed it over to Ichigo. The orb gradually disintegrated on the Soul King's hand and a small part of his left chest emitted rays of light. When Ichigo checked his chest, a fire ball shaped emblem with 5 tails has appeared. The emblem is black in color just like a moonless night with a white skull on its body.

"You have nothing to worry about that Kurosaki-kun. It has been reinforced and perfected after my long years of researched. The Gentei Reīn I made especially for you is quite unique. It is a 5-layer based seal as the emblem pictures out 5 tails; the first layer enables you to exert 10% of your power and strength, the second layer enables you to exert 30%, the third layer enables you to exert 50%, the fourth layer enables you to exert 70%, And lastly, the fifth layer will enable yourself to exert full power and I recommend not to do so. That's all Kurosaki-kun, the rest is up to you and good luck." Kisuke responded confidently. He also reminded Ichigo that communication from the outside of the tower is impossible because of the wall's unique properties. And so he gave Ichigo another item that would help him in his journey. "It's called Pocket."

"This means... I will be similar to that of an average human right, Uruhara-san?" Ichigo asked curiously.

"Yes, but the blood of a Quincy flows in you, Kurosaki-kun. Basically, you are still capable of using Quincy techniques." Kisuke responded while thinking back when he had few visits at the Royal Palace. He saw the Soul King trained his Quincy powers. But having Ichigo's Reiryoku reduced by the use of spiritual limiter, he will not be able to use its full potential.

"Are you sure about this Ichigo?" Rukia asked to assure Ichigo's decision.

"Yeah, it's 'bout damn time to take my long vacation." Ichigo said with a joyful tone. He also told them that his absence at the Royal Palace should be in utmost secrecy. Because he doesn't want Seireitei in turmoil because of his disappearance.

"Yes, Ichigo" Kisuke and Rukia responded in chorus. They're obeying Ichigo not solely of his stature as the Soul King but because he is a great friend that has changed their lives.

"Ichigo, don't underestimate the residents of that Tower." Rukia stated with a serious and worried tone. During the war, the Gotei 13 had a hard time fighting those spiritually aware beings that possess great power and ability that was almost on par with a Captain level.

A big smirk could be seen on Ichigo's face after he heard Rukia's word. He felt the excitement that awaits him in his destination. He stood up from his throne and grabbed his swords. Later then, Ichigo extended his right arm forward and the view was broken like glass. He has opened a garganta to travel between worlds. "See 'ya." And with their goodbyes he walked into the garganta and disappeared in the room.

The Next Moment

Hueco Mundo: Las Noches

A man is looking outside through a big window of his room. He has menacing eyes, hair is swept back with a strand hanging down his face, and wears full clothing similar in style to the Arrancar, completed with a pink sash around the waist. The Soul King had bestowed him the throne to rule Hueco Mundo after his 20,000 years of imprisonment.

"hmmn.."

"Is something wrong Aizen-sama?" A woman asked curiously when she noticed that something is bothering her master. Her appearance is similar to a gothic lolita. Her outfit consists of a frilly dress, large, round sleeves that cut off at her shoulder, short purple-colored hair, teardrop markings on each cheek, and knee high boots. The hollow mask is positioned in her hair right above the left side of her forehead and resembled a spike hairpin.

"It's nothing of importance, Cirucci-chan. For a second, I've felt a Reiatsu similar to his yet it's like of an average human. Well, it perished a second ago." Aizen said while staring at the great tower erected on the sands of Hueco Mundo. "The Tower huh? Kurosaki Ichigo."

Meanwhile

Top Floor: Floating Castle

"So you've finally decided to come to this Prison Tower." A man said when he felt a familiar Reiatsu even at its lowest exertion.

The man's upper face is hidden behind the shadows of light, his visible mouth revealed a frowning expression, he wears a white jacket, black sash, and a white hakama similar to an Arrancar's clothing.

-End of Prologue-