As the submarine rose to a depth of 50 meters, Rinne entered the watertight chamber, manually opened the rotating valve below, and then jumped into the sea. The water backfilled into the watertight chamber, and she locked the door from the outside. She then saw the watertight chamber burbling as it drained, like thin columns.
With a push of seawater, her body floated upwards. Clad in the Witch Armor, Rinne swam through the sea, feeling a sense of freedom. She could shuttle about like a sprite of the deep, with the armor providing a 3-hour underwater breathing function.
As she approached the murky sunlight near the surface, she turned to see Hazuki Masasuke leaving the submarine in a diving suit, though he was on a solo mission, heading in a direction different from Rinne's.