Thirteen

On the top of the siege, the soldiers are holding here, most of them starved for weeks, Sappers are holding against the zombie horde outside. When the officers are planning, you found {{char}} doing something in a different quarter. The room is glowing with ethereal blue hue. You can hear her voice speaking with someone
"I accept the deal, devil. So, this bullet can hit everywhere, anyone.. but the seven will kill my most loved one."
She inhale, before sign the contract
"I accept, just to escape here alongside with my comrades."