Tony Stark learned that Destiny was safe and sound, in a place in space called Kyln Prison.
His eyes filled with intense interest.
After Bay Villa was destroyed, he moved into Stark Tower and converted it into Avengers Tower.
He planned to make it the Avengers' headquarters, complete with laboratories, a medical station, and a massive armor vault, turning it into the hub of the team's operations.
It was worth mentioning that during the Battle of New York, the top of Stark Tower had been damaged.
The most conspicuous "STARK" sign had been mostly destroyed, leaving behind only the letter "A."
"A...? Avenger...?"
After the war, Tony looked at the sole remaining letter on the building and felt that converting it into the Avengers' headquarters might have been fate.
From then on, Tony Stark began repairing and renovating the tower.
The focus of his life naturally shifted to Freedom City Villa in Malibu, California.
It was not until the villa was destroyed and Tony and Pepper, with Destiny's help, crushed Killian's mad plan that they returned to Stark Tower.
After removing the reactor, Tony tried to return to a peaceful life and manage Stark Industries with Pepper.
After a period of relaxed rest and vacationing, he increasingly felt that being a superhero was far more exciting.
After all, he had already maxed out his skills in eating, drinking, and having fun. There was only so much enjoyment left in that.
His sense of responsibility as a superhero drove Tony to secretly push forward several projects:
First, he gave the artificial intelligence JARVIS a comprehensive upgrade, then developed several new iterations of the Mark Armor.
For example, Mark 43 optimized energy efficiency and flight stability, while Mark 45 was the first to use a fully enclosed helmet design...
How could Iron