Reborn As An Extra : I'm gonna mess up everything

Esdeath stood atop the "Quing Chin Mountain", surveying the path ahead with a satisfied smirk. "Hmm... the inheritance isn't far from here,"she muttered, her sharp eyes focused on a cave nestled within the rocky landscape. The air was still, and there was an eerie calm around the entrance, but Esdeath wasn't the type to be intimidated.

After wandering for what seemed like hours, though it had only been around thirty minutes, she had finally found the location the "Map" had guided her to. Her footsteps crunched over the dry ground, and she stopped just before the dark cave entrance.

The cave was unlike anything she'd seen before—an impenetrable blackness, as if it were an endless void. The pitch-black interior seemed to swallow all light, giving it a particularly **frightening aura**. Esdeath, however, wasn't deterred.

"It doesn't look like any monsters or beasts are around... maybe this inheritance was left by someone who didn't feel the need to trap it. Safe area means no surprises." Confident in her assessment, she took a step into the cave, her boots clicking against the stone floor, her breath steady.

Inside, it was pure darkness.

"After killing Eldon I'm getting notifications from system but I can't waste time checking the system notifications right now. The faster I get this inheritance, the sooner I can get back to the academy."

Esdeath pressed on, feeling her way deeper into the cave. From the outside, the cave hadn't looked this large But now it seemed endless. Time dragged as she wandered forward, the unsettling silence amplifying her worry. Even with her sharp senses, the blackness was so consuming that she could hardly see her own hands.

"It's already been fifteen minutes! Where does this even lead?!" Esdeath's confidence faltered slightly as she walked further, the anxiety of a possible trap creeping into her mind. If something were to spring up now, she'd have no way of avoiding it. But turning back wasn't an option. She had come too far.

And then—finally—a faint light flickered in the distance.

Her heart skipped a beat, a mixture of "relief" and "anticipation" flooding her. The moment she saw that light, her instincts kicked in. She bolted forward, her body moving swiftly toward the exit, eager to leave the suffocating darkness behind.

The inheritance was near.

As Esdeath continued running toward the light, it grew brighter and larger, guiding her forward until she finally emerged into a room. The cave opened up into a square chamber, bathed in soft white light that reflected off smooth, "glowing stones" lining the walls. The entire space screamed of an old laboratory—one that had once been bustling with activity but now lay abandoned and decayed.

Esdeath scanned the room. "Wow... an old lab?" she muttered to herself, a bit amazed  by what she saw. Iron tables were scattered around, most of them either rusted or broken down from age. Some of the tools and materials were so old, they'd long since fallen into disrepair. Whatever experiments had been done here were left behind in ruins.

As she walked deeper into the lab, her eyes landed on a single "unbroken table" at the center. On it, there was a letter—old, but still intact. Esdeath's fingers trembled slightly as she reached for it. ""What could this be?""she thought, intrigued.

As she began to read, her eyes narrowed. The "inheritance" she had been searching for was created by a "dwarf" named "Zephyrus Kalyndar". Of course, only the dwarves had the expertise to craft something this advanced. It was all making sense now.

The letter described how Zephyrus had spent his life working on an invention—a "liquid alloy" known as "ZK-20"". This wasn't just any metal—it was a revolutionary creation. The alloy had "mana-circulating properties", meaning that the more "mana" and "offensive essence stones" merged into it, the stronger it would become. But that wasn't the most shocking part. The liquid could "change shape". "Guns, rifles... anything you can imagine," the letter explained, as long as the user had enough mana to control it.