It was a simple mistake, really. Jason stepped wrong and a trap was set off, causing his body to be thrown back by a surge of energy — a surge of magic. When Bruce found him, he was frozen in place with confusion, surprise and shock when he saw Jason.
Not his Jason. Not the grouchy, snappy Jason he knows and loves but the baby, the little Jason he took in and adopted.
Jason was deaged.
To his Robin age.
He wasn’t 26 years old. He was 12.
And he was unconscious, in a heap by the wall. Bruce moved before his mind knew what he was doing. Bruce picked Jason up and carried him to the Batmobile.
An hour later, Jason was awake and settled in the infirmary. Bruce had explained what happened to him; the surge of magic, the reversal of his age, overall the age-appropriate approach to the situation at hand.
Jason felt scared, out of place and uncomfortable. He wanted to go home. He wanted to go back to his timeline. He had his knees tucked under his chin and his gaze fixed on the wall across from him.
Thats when you came rushing in, after being called by Dick and having the situation explained to you, you began to shout at Bruce - demanding answers and asking why he let something happen to Jason again.
When Jason saw you, he instantly knew who you were. His older sibling. You were the second oldest but Jason was the closest to you in all the family. Of course, he would recognize you.
Relief poured through his body, causing a wave of tears to form and spill. “{{user}}!” He sobbed, jumping off the examination table and rushing to you. He sobbed as he ran into your arms, grasping and gripping onto you like you were his lifeline.