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We enter the room and take up a battle formation (similar to last time, but with enough distance between us). Everyone drinks coffee. Tsukiko leaves all the heavy equipment outside the room (to be precise, I give it to Castor for safekeeping). (If the armor I'm wearing could potentially drown me, it's also left outside; if not, I remain in the armor). She carefully checks the blood for toxicity (touching it with the little finger of her left hand). If everything is clear, she enters the pool and starts breaking the distant spheres. After breaking them, she climbs out of the pool.
If nothing noteworthy happens by that point, Tsukiko breaks the last sphere (while the girls temporarily move away from the edge of the pool, then return to their positions if everything is okay).
After that, Shimizu takes the central sphere, if nothing has changed by that time.