My Hero Academia: The Legacy of Lost Numbers

In the depths of the Demon World, Toshinori stands face-to-face with Rex, the imposing figure who possesses knowledge about the workings of this dark realm.

The air is thick with tension as Toshinori seeks answers about his situation and the true nature of his powers.

Toshinori: with determination "Rex, how does this world really work? I need to understand my place in it."

Rex nods, his expression serious.

Rex: "All For One, after becoming Mundus's vessel, gained the highest power in the Underworld. He is the only one who knows about the gateway to all worlds, including yours. But that's not all."

Toshinori clenches his fists, a mixture of anger and determination coursing through him. He knows All For One's ambitions and the threat he poses not just to him but to the entire human world.

Toshinori: "I know he became Mundus's vessel, but my main concern is how strong he is here and how I can increase my own Devil powers."

Rex crosses his arms, considering Toshinori's question carefully.

Rex: "To grow stronger, you must face the demons of this world in battle. Every fight will strengthen your powers. But there's more: you need to discover the predecessors of your own Devil powers. They hold the key to your true potential."

Toshinori frowns, trying to process the implications of Rex's words.

Toshinori: "Predecessors? What do you mean by that?"

Rex looks directly into Toshinori's eyes, his voice steady.

Rex: "In our previous conversation, you mentioned being experimented on by All For One, along with your friends Shoya and Ken. You believed he sought to create loyal subjects for his army, but that's not the whole truth. The predecessors of your powers didn't choose you three as mere vessels; they chose you as their successors."

Toshinori's heart races at Rex's revelation, a mixture of shock and confusion flooding his mind.

Toshinori: "Successors? But why? If they chose us, why didn't they manifest their powers in us fully?"

Rex takes a moment, sensing the gravity of Toshinori's questions.

Rex: "The predecessors saw potential in you three, potential to rise above being mere vessels. They want you to harness their power and carry on their legacy. However, this path is fraught with challenges. You must prove yourself worthy through combat and understanding."

Toshinori feels a spark of hope igniting within him, but it's accompanied by the weight of responsibility.

Toshinori: resolutely "If they chose us as successors, then I will embrace this power and fight to protect what matters. I won't let All For One control my fate or the fate of my friends."

Rex nods, his expression softening slightly.

Rex: "That's the spirit. Remember, the journey will be difficult, but the strength you gain from fighting the demons and discovering your predecessors will shape your destiny. You must learn to master the powers you have inherited while forging your own path."

Toshinori stands tall, determination etched across his face.

Toshinori: "I will find a way to grow stronger and reclaim my memories. All For One won't have the last laugh."

Rex continues to reveal the intricate web of power that connects Toshinori to All For One and the remnants of One For All.

Toshinori listens intently, his mind racing with the implications of Rex's words.

Rex: "All For One has harnessed some powers of the Fallen Angels that he killed. He used those remnants to create a new power by combining them with the embers of One For All."

Toshinori's eyes widen in shock, a realization hitting him hard.

Toshinori: voice trembling "One For All... That's my father's Quirk! But how could All For One manipulate it?"

Rex nods solemnly, acknowledging the gravity of the situation.

Rex: "Yes, the power you know as One For All was a force for good, meant to help others. When All For One combined it with the essence of the Fallen Angels, it took on a new form—a power with its own consciousness. This power, created from the light, instinctively seeks out a worthy successor."

Toshinori furrows his brow, trying to comprehend the depth of Rex's explanation.

Toshinori: "So, that power went straight to Midoriya's bloodline to choose its rightful owner? But what happens to the power's memories?"

Rex's expression darkens slightly, his voice serious.

Rex: "That's the risk. Once that power chooses its rightful owner, it loses its memories. It becomes a pure force, guided by the will of its new vessel. In Midoriya's case, it chose him because he embodies the ideals that One For All represents."

A flicker of understanding passes through Toshinori's mind. He leans back slightly, a smile forming on his lips as he connects the dots.

Toshinori: thoughtfully "So that's it... The origin of my elder brother Izana's powers. He must have been connected to One For All in some way, too."

Rex nods, pleased to see Toshinori starting to piece together the complex puzzle.

Rex: "Exactly. The legacy of One For All flows through your family, influencing those who are worthy. Your brother, like Midoriya, likely received a fragment of that power, allowing him to harness extraordinary abilities. But it came at a cost, just as it has for you."

Toshinori reflects on the weight of this newfound knowledge, a sense of clarity washing over him.

Toshinori: "If I can understand the origin of my powers, I can also learn to control them. I'll honor my family's legacy while fighting against All For One. I won't let him taint what my father built."

Rex smiles, impressed by Toshinori's resolve.

Rex: "That's the spirit. Embrace your heritage and fight to protect those you care about. The true strength of a successor lies not just in power but in the heart behind that power."

The atmosphere in the dim chamber grows more intense as Toshinori's resolve solidifies. He looks straight at Rex, determination burning in his eyes.

Toshinori: with unwavering conviction "I will make sure to find a way to defeat All For One. He won't get away with what he's done—not to my family, not to anyone."

Rex nods, recognizing the fire within Toshinori.

Rex: "That's the mindset you need. To challenge a force like All For One, you'll need to harness not only your own strength but also the powers of your predecessors. Remember, they are with you in spirit, guiding you toward your true potential."

Toshinori takes a deep breath, channeling the power he feels surging within him.

Toshinori: "I'll train harder than ever. I need to understand my powers, find the predecessors, and learn everything I can about this new strength. All For One thinks he can control everything, but he underestimates the bond I have with my friends and family."

Rex smiles, impressed by Toshinori's tenacity.

Rex: "Good. Use that bond as your strength. You're not alone in this fight; you have allies waiting to support you. But remember, each battle will bring you closer to the truth and your true power."

Toshinori nods, feeling a wave of determination wash over him. He knows that the journey ahead will be perilous, but he is prepared to face it head-on.

Toshinori: "I'll find a way to defeat All For One and save my friends. I owe it to them, and I owe it to my brother, Toshinori. I won't let his sacrifice be in vain."

With a fierce resolve, Toshinori looks toward the path that lies ahead.

The shadows of the Demon World may be daunting, but he feels the weight of his legacy pushing him forward.

He is ready to embrace his role as a successor and rise against the darkness that threatens both worlds.