I don't feel so good
Silence fell over the universe. Something was happening, but what, Tony didn't know. The hair standing up on the back of his neck warned him that dark times were ahead, and there was nothing he could do about it. Seconds earlier, Thanos disappeared in a cloud of swirling purple. With one stone left to take, Tony began to mourn the inevitable loss of a teammate.
Seconds of silent calm turned to minutes as Tony, Peter, Strange, and the Guardians stood, tense and ready for hell to rain down on them. Nothing. Tony's confused and weary gaze connected with Strange and was met with calm resignation.
"Why?" Tony's voice shook with anxiety as he prepared for the worst.
Strange's features began to blur before his eyes, crumpling into the remains of the planet.
"It had to be you," the doctor explained calmly. "There was no other way." Tony's heart seemed to beat out of his chest and he watched in horror as what was once Dr. Strange blew away in the winds of the lonely, deserted planet. He shoulders dropped in defeat. He hadn't wanted to lose anyone this time. He was supposed to be better. He was supposed to get everyone out alive.
Sputtering behind him brought his attention to his remaining crew. The guardians, Quill in the center, looked pleadingly at him. Fear and confusion clear in their eyes as they too began to fade to dust. While Tony did not know them well, he mourned for them like any other. Even Quill, though he would later curse him for his stupidity, did not deserve this fate.
"Mr. Stark…." A scared whine from Peter made Tony freeze. "I don't feel so good." His heart stopped. He couldn't lose the kid. His kid. Not now, not ever. He turned slowly, his eyes unblinking, afraid that if he closed them for one second, Peter would melt away. "What's happening?" the boy cried as he stumbled into Tony's shaking embrace. "Mr. Stark, I don't want to go. I don't want to go!"
Peter's legs gave out and he fell from Tony's arms to the course, hard ground below. Peter clutched his stomach in agony and confusion, waiting for the end to come. Tears leaked from his eyes as he pleaded with his mentor. Tony watched helplessly as Peter opened his mouth to speak again. What came out was hardly what he expected. Peter's diaphragm tensed as a pocket of air released into his throat, expelling his tension and a sizable belch.
Peter's tears turned to relieved hysteria as he lay whole and well on the ground. His mentor kneeled above him in shocked silence before pulling the boy into a frantic embrace. "Don't you ever scare me like that again, Underoos."
"Sorry, Mr. Stark," Peter mumbled into his shoulder.