Shiryu had been poisoned and was carried away by the medical staff. Of course, Magellan had not intended to kill Shiryu, and Sengoku would not have allowed it either. Sengoku left with the antidote Magellan had given him.
If the scope of the battle had not been restricted, it would not have been so easy for Magellan to defeat Shiryu. They might very well have ended up mutually injured. But in order to limit the destruction, Sengoku had designated a combat area, allowing Magellan to win without injury, though it took him quite a while.
The position of Chief Warden officially went to Magellan. All that remained was to go through the formal procedures.
By the time Carlos emerged from the Kamui Space, the battle was already over.
Carlos kept a close eye on developments in Impel Down and soon learned that Shiryu had lost and Magellan had become Chief Warden.
Although he did not know the exact process, the result was not unexpected. That would make it much easier for him to succeed in causing trouble next.
Carlos secretly hypnotized someone from Impel Down and quickly learned Shiryu's location. Having been cured of the poison, Shiryu was resting in his room.
Carlos did not go to see Shiryu immediately. He waited until deep into the night.
Shiryu's quarters were located in a suite at the right corner of the second level, Beast Hell. As one of Impel Down's higher-ups, his treatment was fairly decent: three bedrooms, a living room, and a bathroom. There was no kitchen, since Shiryu had no need to cook for himself.
In the spacious yet plain bedroom, Shiryu lay alone on his bed with a cigar between his lips. Its ember flickered in the darkness. In his hand was a soft white cloth,