Tower of Babel

The Tower of Babel is a physical construction in the Seraph of the End series, one that existed in prehistoric times. Located prominently within a seraph civilization, it was where Sika Madu took up residence as King of Earth. Involved with the Babel Project, it was one such tower among others situated across planetary bodies. Used to gather light, the Tower of Babel's purpose was also to help seraphs return to paradise.

Details
Even with construction based advancements that were accessible at the time it was a unique structure. Long and thin, the lone building seen towered above all others. It was further unique in how it slanted at an angle as it rose upwards. Although other buildings appeared to be made from what resembled a quartz crystal like substance, the tower may have consisted of a different material. Alternatively it may have been a more refined form of what other buildings were made of. Should breakages in the building occur they could be sealed by a substance emitted from floating spell circle like formations.

At various points all up its height, the tower had wide rectangular horizontal window like designs which also functioned as entry points for beings capable of flight. By nightfall it is possible that the tower emitted some degree of light. The structure was surrounded by a huge ringed wall around it. Past this outer wall, the tower appeared to descend underground. Near this depth, there where multiple square like access points which allowed entry to a hollow inner column of the tower. These square openings featured identification checks before entry.

Technological in its nature, the tower seemingly had the means to allow for electronic-like voice communications. The innermost section of the Tower of Babel was an energy-like column with elevators at points on the wall around it. This may have been the Unrailed Elevator Technology mentioned in the announcement. The elevators themselves were cylinder in shape, and featured buttons without markings.

Within a room thought to be at the top, one of the rooms within the tower was observable. Through technological effects or not, a night-time space-appearing environment was able to be formed where walls would not be visible. The entire floor radiated light, and within the Tower of Babel were other advancements such as a levitating chair and multiple flat-screen devices. A cleansing room was seemingly present at some point in the tower, as was Mikaela's room which featured a bed.

Where the tower indeed reached into Space it had at least ten huge rings out light around it of various sizes. These rings and likely the light within the tower itself could become darkened. Whatever the tower was made of, it was not durable enough to weather a combined seraph lightning bolt.

Known Residents

 * Sika Madu - Addressed as the King of Earth, he accessed forbidden information within a room of the tower.
 * Mikaela - Sika Madu's child who was able to fly into the tower and had a room there.
 * A homunculus named Yu - A spherical eyeball-like being tasked with monitoring Mikaela.

History
With Mikaela's birth visualized it would appear that a room of the tower was the location of where this event occurred.

Before the evolution of humans, when dinosaurs were alive on the planet, a civilization of seraphs and homunculi had been established on Earth. Rising like a beam of light, the Tower of Babel was the first indication of something appearing man-made from this prehistorical era.

The tower was flown to by Mikaela along with Yu the homunculus. It is in Sika Madu's area within the Tower of Babel that he accesses information on darkening the Sun's power. Creating servant tribes, and resurrecting the dead are two other matters that he examines, and conceals from Mikaela. Where Mikaela had brought Sika Madu ice cream that existed then, he also revealed that he had named a homunculus Yu.

Referred to in conversation by Sika Madu, the announcement detailed how they had once again succeeded in creating a tower taller than all others. A flat screen depicts the Sun and planets Mercury, Venus, Earth, Mars, Jupiter, and Saturn when this is stated. In displaying photons that are said to be nearing 90% of the target volume, that may have been the power being collected by Babel Tower that Sika Madu mentions to Paimon to get them all to paradise where God awaited.

It is Mikaela's room in the tower that Paimon heads to in order to murder him. At some point up the tower, past where surrounding buildings are visible, the tower would endure a tremendous explosion from Mikaela's light and have black smoke billow out a fracture in its side. This fracture was sealed by beams fired from multiple spell circles that formed around the effected area. A second explosion would blast out from the tower as Mikaela and Paimon's light collided. This ruin did not appear so readily fixed as the spell circles awaited outside.

From events here it becomes the location where Paimon and Mikaela would take their own lives. The tower is visualized and had been worked on tirelessly to collect light that was needed for angels to return home to God's side on paradise. The location was chosen when Sika Madu attempted to communicate with God to reveal he created life, plus his plans for resurrection and extending the lives of angels.

The building endured a third explosion when the homunculus Yu blasted its way outside. Reaching into Space, the Tower of Babel rose through many halos of light around it. These would become darkened due to the homunculus' actions. This would be noticed by trumpet wielding seraphs who appeared in Space.

The Tower of Babel came under direct fire from a lightning strike generated from a bright sun-like sphere produced by the seraphs. Fractured in multiple sections, the tower was devastated by that contact as the electricity aimed for Sika Madu. After the falling debris there was no visible sign of it to be damaged further from the meteor rain that a humanoid angel manifested to end Earth.

The structure that reached into Space would join the seraph civilization in having no traces left to it as Sika Madu was left alone on Earth cursed as an undead. After a millennia, the tower would be on Sika Madu's mind when he meant to resume his resurrection campaign, but noted Babel had fallen so he did not have it available to collect light for him.

Even were the tower available, the light was felt to be no longer accessible to Sika Madu now that he had become cursed. That the Tower of Babel, and the light that it could gather was no longer an option was a reason why Sika Madu opted to have Yu the homunculus create humans for them to gather darkness instead,

Story
Lost to history, the existence of the Tower of Babel is come across by Yu and Mika who have infiltrated past memories. In following Mikaela through the memory, Mika specifies that he was headed to that tower. Before the outer wall, Mika counts up to thirty floors before he and Yu forward to enter the tower.

Accessing it through the outer wall entrance, Yu and Mika marvel at the inside view. Seraphs and homunculi are seen in this area. Observing a seraph have its identity confirmed, Yu and Mika take their chance to head into the inner section of the tower. Elevators transport seraphs and homunculi upwards, where Yu and Mika take one to the highest floor.

It is here that Yu and Mika learn that Mikaela was ill, and suspect Sika Madu was lying about there being a cure for it. Unbeknownst to them, it is inside the tower where Yu the homunculus could perceive that Yu and Mika were in this memory. Yu and Mika would learn the circumstances of Mikaela's passing where it occurred in the tower.

Trivia

 * In the real world the Tower of Babel is featured in origin myths as for why people speak different languages. In some works of literature it has a set height where here the Tower of Babel may very well reach past the stratosphere into Space at least.
 * Shown in chapter 123, the tower is revealed to reach into Space in chapter 128.
 * In Seraph of the End 7: Guren Ichinose: Catastrophe at Sixteen, Mahiru mentions the Tower of Babel noting that it as an example when Guren asks her about the Seraph of the End experiment. Mahiru goes as to say that it is divine punishment with incredible power, and it is possible to trigger God's wrath.