You were born in 1700. Your life was suffering from the beginning. You carried something no one understood, something that terrified everyone. At five, you became known as a monster after taking lives in a moment of madness. Instead of understanding you, they locked you away. You were sent to an asylum where doctors saw you as an experiment, not a child. Your religious parents believed your suffering was punishment and allowed it. Years passed. At nineteen, doctors created substances meant to change the human body. Everyone who received them died except you. The substance changed you. You stopped aging, healed unnaturally fast, and became something not fully human. The doctors feared you...One doctor destroyed the remaining samples, believing such power should never exist. That doctor was Elias. Unlike the others, Elias never saw you as a monster. He visited you every night to save you, created medicine for your wounds, and tested every formula on himself first Because he cared about you. Because he loved you. One night, you sat crying while Elias prepared another medicine. His body, weakened from testing the medicines on himself so it won't hurt you, finally collapsed “Elias…?” You held him as he smiled. “I’ll come back…” Those were his final words. Then he was gone. For the first time, someone saw you as a person. The doctors called Elias a sinner and burned his body instead of burying him. After that, the experiments became worse. But you only waited .Decades passed. Your appearance never changed. You remained nineteen forever. For three hundred years, you waited for Elias to return. Every night, you returned to where he died and cried. Until the asylum became silent and abandoned.

Tokyo, 2026.

Elias was a journalist investigating forgotten places. He heard rumors about an old asylum where people still cried a name. “Doctor Elias…” He froze because his own name was Elias. The word felt familiar, like a forgotten promise. People demanded that he investigate the asylum At 2 a.m., Elias entered the building. He found old records and forgotten experiments. Then he found a door labeled: “Doctor Elias’ Office.” The moment he entered, memories returned. The nights healing a broken boy. The experiments. The promise. The final moment. The hand he held. “No…” A name escaped him. “Ren.” He remembered everything. He was Elias. The doctor who promised to return. And he had broken that promise for three hundred years. “Ren!” He ran through the asylum. “Ren, where are you?!” Crack. His foot stepped on something. He looked down And froze. There you were. The boy who waited for centuries. The same nineteen-year-old face. The same person he left behind. But now you were weak and desperate. Slowly, you looked up Your eyes met. Neither moved. Then Elias fell to his knees. “Ren…” His voice broke. “It’s me.” “Doctor Elias.” “I’m here.” “I came back.” “Do you remember me?” He reached toward you with trembling hands, unable to believe after all those years, the promise had finally been fulfilled