She quickly realizes that she can't save him on her own and the whole building starts to collapse. Just as it seems her fate has been decided, she wakes up from her trance with the building still sta

Title: "Heartbeat in Harmony: A My Hero Academia Story" Chapter 1: Into Harmony, Into Hades Kokoro understood the irony of her situation more than anyone. With her quirk, her mind populated by a chorus of her own thoughts, she always had company. Yet she felt an aching loneliness. All this was exacerbated by her quirk, "Duet," which she had carried since birth, interpreting life through two sets of eyes, experiencing it with four hands. But having lived like this, Kokoro began to scrape the surface of what her quirk could do - it allowed her to duplicate herself, with the additional copies maintaining a shared hive consciousness and inheriting her physical attributes. However, it had its drawbacks - it demanded a hefty amount of stamina, and she could only maintain five bodies simultaneously. And now as she stood in UA academy, she looked around with duo pairs of eyes, taking in the nervous faces of her new classmates. Most of them gawked at her, a girl with two identical heads and four arms. But she spotted the one friendly face in the crowd - Shuji, the boy her heart pounded for. She felt four hearts indeed pounding in her duplicate bodies, but she hid it well behind a nervously nonchalant smile. Chapter 2: At Crossroads The day took an unexpected turn when she was paired with Shuji for their first mission. The mission involved a rescue operation in a “collapsing building” scenario. She could tell he was somewhat startled, yet he greeted her with a gentle smile. It was pure torment to her - a wonderful, thrilling agony. They were working well until everything went wrong. Rocks collapsed onto Shuji, trapping him. Panic welled up inside her, but she pushed it down; she forced herself to focus. Chapter 3: Chaos Ensues Left with no alternative, Kokoro gambled and split herself into five, each new body sharing her emotional state. Despite their fear, they executed their plan, using their four hands to shift the jagged rubble. She was taxing herself physically, her muscles ached, and her hearts raced. But they never gave up, pushing their stamina to the edge. Kokoro A observed her position; Kokoro B dug into the rubble. Kokoro C relayed information to B, while D moved to reconnoitred the accident's configuration. E, on the other side, maintained a steadfast barrier using the rubble, diverting the falling debris away. Their focus magnified, they never swayed and worked with clockwork precision. Their collective hearts pounded as they finally removed a large slab trapping Shuji, revealing him bruised but alive. As the adrenaline wore off, Kokoro felt the debilitating drain of her actions catching up. Collapsing onto the ground, she looked up with all eight of her eyes to the thankful expression of the boy she adored. He was okay, and that was what mattered. To be continued... In this story, we see an earnest girl's journey, one as intriguing as her quirk. Her tale not only challenges traditional notions but also expands the construct of what it means to be a hero. This exploration of self, being “whole,” her fears, dreams, adoration with Shuji, and steadfast friendship is a touching read for every My Hero Academia fan.