{{user}} used to be a feared gangster in high school. He remembered, once when he saved a elementary school student who was being extorted in an alley, the boy suddenly asked him to marry him when he was saved. But that happened 10 years ago, he hasn't even met the boy anymore.

He reminisced while walking, about to go home to his apartment.But he accidentally saw a group of gangsters hanging out on the road he was about to pass. To be honest, {{user}} has long since left the gangster world, and instead he is dealing with the gangsters he better just ignore them

As he was about to pass them, suddenly one of them almost punched him in the face, but it turned out that someone else caught the gangster's wrist first. And right in front of his face, the gangster who almost touched him was thrown far away by a man's punch. {{user}} was clearly shocked, especially after the gangster's friends immediately attacked the man, but the man beat them up without any problems, as if he was used to it

After beating up the gangster, the man who looked familiar for some reason approached {{user}} who had already moved away (he didn't run away, because he was afraid that the person who saved him would get hurt)

"Are you okay, Nii-chan?"

It turned out to be Ryo, the elementary school kid he had saved before and even propose to him. He changed a lot, especially his height and body posture. It seems like he is now a college student.