Izuku took a deep breath, his gaze fixed on the capsules containing his mother and Eri. He was still trembling from the fight, but he knew he couldn't afford to rest. He had to get them out of there.

He first approached his mother's capsule. The console beside it showed blinking lights and a series of commands he didn't fully understand. He pressed a button labeled "Manual Thawing." A buzzing sound echoed, and slowly, the capsule began to open.

Mother: (Coughing) What... what's happening?

Izuku: (Helping her out) It's okay, Mom. We're fine, but we need to move. Everything here has gone wrong.

She looked around, confused, but nodded when she saw the serious expression on her son's face. Izuku then turned to Eri's capsule. Her tiny hands were still curled against her body, fast asleep.

Izuku: (In a soft voice) I'm here, little one. Everything will be fine.

He repeated the process, and soon Eri was in his arms. Though still somewhat drowsy, she opened her eyes just enough to look at Izuku and smile faintly.

Eri: (Mumbling) Papa... cold.

Izuku: (With a soothing smile) I know, little one. But it's over. We're going home.

Just as he was about to move, he heard footsteps behind him. He quickly turned, gripping the pistol he had taken. It was Piper, looking relieved to see him.

Piper: (Gasping) Izuku! You're awake! I've been looking for you. Everything here is a mess.

Izuku: Are you okay?

Piper: Sort of. I don't understand what's going on, but I've seen horrible things in other parts of the vault. We need to get out of here before something worse happens.

Izuku: Alright. Stay close. We'll get my family out of here.

Together, they moved through the vault's hallways. The place was desolate, with debris scattered everywhere and flickering lights creating an eerie atmosphere. In some places, they found empty or malfunctioning capsules, their occupants frozen in irregular patterns.

In a maintenance area, Izuku found something that caught his attention: a Pip-Boy sitting on a table, covered in dust.

Izuku: (Carefully picking it up) This could be useful.

He strapped the device to his left arm and powered it on. The screen lit up his face as he navigated through its functions. The Pip-Boy showed a map of the vault, an inventory system, and audio logs belonging to Vault-Tec staff.

Piper: (Curious) What's that?

Izuku: A device for managing information. It could help us get out of here.

The Pip-Boy also displayed a route to the vault's exit, labeled as "Main Access." Izuku led the group with renewed confidence, adjusting the pistol in his hand.

On the way, they encountered an obstacle: several giant radioactive cockroaches blocked a hallway.

Mother: (Frightened) What the hell are those things?

Izuku: (Shielding Eri with his body) Stay back. I'll take care of it.

The cockroaches charged toward them, but Izuku reacted with military precision. He pulled the trigger of the pistol, eliminating them one by one. Although the gunshots echoed through the halls, the danger was quickly neutralized.

Piper: (Impressed) Wow... seems like your training is still intact.

Izuku: (Wiping sweat off his forehead) I didn't have a choice. Let's keep moving.

Finally, they reached the main door of the vault. A massive circular gate blocked their exit, with a control panel to one side. Izuku connected the Pip-Boy to the panel, following the instructions that appeared on the screen.

Pip-Boy: "Proceeding with main door opening. Please stay clear of the mechanism."

The sound of giant gears turning filled the air as the gate slowly moved. The sunlight began to filter through the opening, momentarily blinding them.

Mother: (With tears in her eyes) Is that... the outside?

Izuku: (Holding Eri tightly) Yes. But we don't know what's waiting out there. Prepare for the worst.

When the door fully opened, the group stepped out into the outside world. What they found left them speechless.

A desolate landscape stretched before them. The ruins of what was once a thriving city were now covered in ash. The sky had a dull gray hue, and the air was thick with the smell of destruction.

Piper: (In shock) So... this is what's left.

Izuku looked at his family, his mother still trying to process what she was seeing, and Eri, who was asleep in his arms, unaware of the chaos.

Izuku: (With determination) No matter what happened here, we'll find a way to survive. I won't let anything happen to you.

With the Pip-Boy as their guide, Izuku took the first step into this new and unknown world, determined to protect his loved ones at all costs.

End of Chapter 4.

Thanks for Reading..