Rinko muttered as she saw the dazzling rainbow glow due to the reflection of the black solar panels. The co-pilot in a dark suit who had been on the seat as they flew answered quietly. “That’s right. There’s still 10 minutes till arrival.” The helicopter flew approximately 250km in a long trip from Shinkiba to Tokyo -and the surroundings of the large ocean research facility «Ocean Turtle» then got into landing position in a serviceable manner. Rinko was inadvertently gobsmacked by the overly majestic sight. The term ship could not describe this completely. The large pyramid was standing steadfastly in the middle of the sea with a length that was 1.5 times that of the largest ship in the world, the Nimitz. The height was equivalent to a 25-storey building —she had investigated this data beforehand, but the difference between her imagination and reality was like the distance between the Earth and the moon. The four-sided pyramid that was 400m long and 250m wide had black glowing panels that covered it like a shell. All of these panels were as large as the helicopter that they were currently in. How much did they invest in this thing here? Rinko could not tell. There was a rumor that in recent years, they had fully invested in the precious metals on the seabed off the Sagami Bay Coast, and after seeing that large body which defied common sense, one could tell that it was not simply a rumor. The mechanized megafloat ocean construct looked like it was developed for the next generation of seabed oil extraction —that should be the case, but in fact, what was installed inside was a research facility for the next generation Full Dive Machine that might be called