The Treasury

The building was like a sealed box, with one way only to enter it, which was by passing through a semi transparent door.

"Let me go first, please," Nina pleaded, and I didn't have any objection to that. just as I nodded, she jumped out of ecstasy, and then passed through that door.

The moment she passed, the whole building flashed in green light first, then in black, followed by a sudden booming sound as Nina fell off the ground, heavily hitting a wall nearby.

"Are you ok?" I ran to check on her, as she stood up, heavily, with some difficulty, as I noticed some bruises inside her. She looked at me as she faintly said:

"There is no way I or anyone else can enter here before you, this door is made to filter anyone not the person who owned the fort," she said, before she recalled something, "have you attached the heart of the fort to you by blood?"