Also, Luke remembered a little of the plot of the Avengers.
While he couldn't recall exactly how the battle had progressed, he still vividly remembered the Chitauri army, which had looked like a swarm of locusts.
Just like with a certain horror movie in his previous life, he didn't remember the exact plot, but the scene of a certain wizard opening his mouth to spit out a swarm of locusts had left a deep impression on him.
This was also a habit for most people.
What humans truly remembered was a particular moment that was clearly different from ordinary life.
If a person played games every night, he wouldn't remember the details of a game he played two months ago.
But if there came a day that he was screwed over by some kid teammate and his level dropped, he would remember very clearly what happened in the game that day.