Unclear Immolation

In the depths of the dark waters, only silence and the faint echo of the sea could be perceived by one's ears. In a narrow passage within the vast underwater headquarters, someone dressed in military attire was walking. The atmosphere was eerily calm, with only thick concrete walls encircling and stretching along, accompanied by bright lights on the distant right and left. Despite the tranquility, there were still boundaries she must not cross, especially when entering certain rooms. No one would have guessed that this long-haired braided woman was walking towards the lab. Perhaps, even she herself had never considered setting foot here.

"Hm? What are you doing here?" asked a guard standing at the end of the corridor, wielding a firearm.