The Admiral was poisoned and killed by one of his own shipgirls.
The port district immediately became a battleground of competing factions. There was Ayla, whose plan had gone perfectly; the poisoner; the secretary ship, whose thoughts were impossible to read and who held all the power; a Deep Sea spy who was completely baffled; shipgirls and Deep Sea dwellers bent on avenging the Admiral; shipgirls who felt relieved by his death and sank into despair; onlookers who knew nothing of the truth; the Pie Team, who shouldn't have been spectating but were doing it anyway; and an unreliable private detective sent to investigate the Admiral's death...
"So, what do you think of the story above? Pretty interesting, right?" asked Alpha, crouched inside a women's restroom stall. From the stall next door, Omega replied, "It's still missing something."