Seated in a plush chair, a kid who appeared to be around 8 years old, dressed in a black silk tuxedo, carried the weight of grief from his parents' funeral. This young soul, named Ethen Wayne, blamed himself for the loss, shedding tears that seemed to stretch for hours. Amidst his anguish, a sudden pain struck him, and he succumbed to unconsciousness.

In this state, a peculiar memory unfolded—a narrative that felt both his and yet not quite. It portrayed a world where he, as a poor refugee child, struggled for survival. A chance to move to Australia transformed his fate, compelling him to study diligently and eventually become a biologist upon completing university.

Post-graduation, he dedicated two decades to his career, accumulating enough wealth by the age of 35 to purchase a home in Kenya, the very place he once sought to escape as a refugee. As he matured, he discovered a newfound appreciation for the land.

Upon retirement, Ethen delved into the realms of movies, games, novels, comics, and more, embracing a NEET lifestyle for five years. Yet, at the age of 40, boredom ushered in change. He ventured into marriage, welcoming two beautiful daughters into his life. His journey concluded at the age of 65.

As this memory faded, a cascade of other infinite memories flooded young Ethen's consciousness. Each one depicted the same man, living in infinite different worlds. The vast tapestry of experiences unfolded, leaving him to grapple with the enormity of these interconnected lifetimes

Ethan had been screaming for what felt like an eternity, lost in a spinning sea of existential dread. His senses were bombarded by an uncountable number of realities too far beyond his comprehension to describe. In each vision, he glimpsed different versions of people who looked like him, creating an infinite array of himself across an infinite universe. The sheer volume of knowledge crammed into his mind felt like an impending explosion.

As he screamed in the recesses of his mind, something snapped, and he abruptly awoke from his unconscious state, drenched in sweat. The rush of memories flooded his consciousness, overwhelming him. His head throbbed from the deluge of information as he struggled to process what had transpired. Just then, the door to his room shattered, and an elderly butler entered.

"Master Ethan, are you okay? I heard your scream, and your door seemed to be locked, so I broke it."

"I'm fine, Alfred," replied Ethan, his voice feeble as he succumbed once again to unconsciousness.

"Master Ethan… Master Ethan..." Alfred's concerned voice echoed in the room.
...............

3 month later

Ethen finally stirred from his three-month-long coma, greeted by a flood of memories from the initial recollections he had acquired. However, the other memories remained elusive, shrouded in a mystery that perplexed him. "My brain must be safeguarding those memories—there's just too much," muttered Ethen, grappling with the enigma of his recollections. The sensation felt akin to a movie playing out in his mind, each frame etched vividly.

"Thank the heavens you've awakened, Master Ethen," spoke an elderly man beside him. Recognition dawned on Ethen—Alfred. The pieces fell into place. 'Oh, dear... I'm in the DC universe. I'm Ethen Wayne, but why do I look different, and why am I not Bruce Wayne? Is this an alternate universe?' he pondered, the perplexity evident in his realization.

"I'm fine, Alfred. I just had a mental breakdown," Ethan reassured, taking a moment to glance around. The surroundings became clearer, revealing a space that seemed designed for convalescence, meant for a patient recovering from a prolonged coma.

What's all this about, Alfred?" inquired Ethen.

Alfred, with a concerned look, responded, "Master, you've been in a coma for the last three months."

Ethen, absorbing the information, contemplated, "Well, that's reasonable. I was in a coma. Considering the overwhelming memories, I'm fortunate it's only been three months." He muttered to himself, grappling with the complexities of his situation.

Ethen contemplated whether to share his experience with Alfred, but another wave of memories flooded his mind. This recollection transported him to a magical world teeming with heroes and a demon lord.

In this realm, Ethen witnessed the life of a kid—his own age—unfolding before him. The narrative unveiled the unpredictable events of this magical existence. In this world, people at the age of 15 underwent an awakening ceremony, where they received a randomly assigned skill ranked from F (lowest) to EX (highest).

The child in this memory received a specialized skill called Knowledge Assimilate, an F-ranked skill in this world. Unlike other skills, the rank of Knowledge Assimilate could evolve—the more books one assimilated, the stronger the skill became. Additionally, it had three sub-skills:

Energy Assimilation: Allows the user to consume and learn details about any form of energy.
Material Assimilate: Enables the user to learn everything about a material or item, including DNA, and assimilate it.
Creation of Unique Skills: Empowers the user to create skills based on the assimilated knowledge.

In this magical world, Ethen became a Sage due to his mastery of Knowledge Assimilate. He wielded various magical elements, successfully defeating both the hero and the demon lord. However, as his power grew, the hero and demon lord decided to join forces and ambush him. At the age of 25, faced with the inevitability of his demise, Ethen harbored a deep desire for revenge against those who sought to end him. Refusing to succumb passively, he harnessed all his energy and knowledge, orchestrating a powerful self-explosion to exact vengeance on both the demon lord and hero.

Ethen returned to reality, realizing that the influx of memories could become bothersome if left unchecked. Sighing with annoyance, he contemplated ways to control this ability.

Curious about the extent of his skills, Ethen decided to test them. He instructed Alfred to fetch him a book, expressing a preference for a biology book.

Alfred inquired, "What kind of book do you need, Master?"

"Anything is good, but a biology book would be best," replied Ethen.

"I understand, Master," said Alfred as he left the room.

Reflecting on his memories, Ethen realized that unlocking the other sub-skills required reaching A rank, but currently, he could only assimilate knowledge. Recalling that it took him until the age of 22 to unlock these abilities in his past memory, he considered the challenges he might face, especially with the difficulty of obtaining books in that particular world but in this world it was easy to get a lot of knowledge from books and the internet.