Rin stood in front of the heavy iron door leading to the basement training facility of her new home. The cold metal panel gleamed under the dim lighting as she pondered over the best passcode. After a moment of reflection, she keyed in 220420XX, the date of her arrival in this world—the day she had stepped into her first dungeon and met her first companion, Onyx. A quiet beep followed, and the door unlocked with a soft click, allowing her entry.
Descending the stone steps, she marveled at the spacious underground facility. It was equipped with everything necessary for rigorous training: reinforced walls, combat dummies, weapons, and even a magical energy field to simulate real battle conditions. This was the perfect place to sharpen her skills.
With a gentle motion, she summoned her two companions.
"Onyx! Aurelis! Come out."
