probability and calamity: Mha x male child reader

Found at last?

Saying that everyone was shocked to find a vast area of Musutafu in ruins would be an understatement. Individuals were already combing through the rubble for any signs of life. The grim sight of many bodies and strewn bones shattered the hopes of most, leaving morale devastated. Heroes converged on the site within minutes, uniting with rescue teams in a frantic search among the ruins, holding onto the slim hope of locating even one survivor...

Even though most people assumed that no one could survive such a devastating attack, hope was still ignited n their hearts...

Class 1-A arrived on the scene, accompanied by several pro heroes including Eraserhead, All Might, and a rising star known as Heartbeat. Without needing instructions, the students and teachers sprang into action. Individuals like Midoriya were diligently removing rubble to find survivors, but with each pulse check, their hopes dwindled.

Heartbeat: Goddamnit, how the hell does something like this happen?!

Eraserhead: That's not what's important right now, all we can do is find survivors and help them, maybe then we can find the cause behind all this...

Shota might not have shown it, but he could already guess what had transpired. As stone and metal beams obstructed his view, he noticed some figures in lab coats and others clad in what seemed to be body armour. The haunting thought that something truly sinister had occurred crossed Aizawa's mind, and it all unfolded right under their noses. Clenching his right hand into a fist, Eraserhead braced himself...

To his surprise and slight annoyance, Eraserhead was approached by the problem child of his class...

Midoriya: Sensei, what was happening down there?

Eraserhead: I don't know kid, but let me tell you, it's probably not good, no one would just build a extensive lab under the city for harmless research.

Midoriya: Y-You mean?....

Eraserhead: that what happened down they wasn't legal, nor was it probably for the greater good... 

Izuku absorbed those words, a fragment of him accepting them as truth. Gazing into the depths of the crater, he could only speculate. What had transpired? What had triggered such a catastrophic collapse? Certainly, something or someone with immense power must have been responsible, but who could it be?

Heartbeat was meticulously sifting through the rubble with haste; his right hand had transformed into a heartbeat sensor, detecting everything. To his dismay and fury, not a single heartbeat was found, and a part of him felt dreadful...

That's when a loud beep echoed through his ears

Beneath a massive slab of debris, a faint heartbeat persisted. The young hero, overwhelmed and scarcely able to think, shouted desperately from the depths of the crater...

Heartbeat: H-HEY! I FOUND SOMEONE!

Almost immediately, everyone sprang into action, diving into the crater to reach Heartbeat's side. As the heroes drew nearer, they could indeed see a heartbeat on the hero's monitor. It was weak and faint, signaling to the heroes that they needed to act quickly...

All Might swiftly seized the largest slab of stone and hurled it aside, while everyone else clutched at whatever they could. With each passing second, more rubble was being cleared from the trapped individual, and All Might found himself moving with unprecedented speed...

After several seconds of frenzied effort, the sole survivor of the disaster was visible to everyone...

There, trapped under who know how much rubble was a small child, barely even 5 years old, blood spilling from his mouth like a fire hose, his eyes were shut as his body was being crushed...