My thoughts drifted back to the day I first met Gu Huai.

I had been an orphan since I was a child.

I was 20 years old that year, with a mediocre job. My monthly salary was just enough to rent a small apartment near the subway.

I remembered it was almost 2 a.m. when I got home from work.

There were almost no people on the road.

A car accident had happened at the crossroads dozens of meters away from me. When I got closer, I saw a young man covered in blood lying on the ground.

When the hit-and-run driver saw someone coming, he hurriedly drove away from the scene.

The boy lay weakly in a pool of blood, on the verge of death.

Later, I took him to the hospital.

The young man was in a coma for three whole days. When he woke up again, he couldn't remember anything except his name.

He said his name was Gu Huai.

That day, the young man on the hospital bed blinked his innocent eyes, like an abandoned puppy, and held onto the sleeve of my clothes.

"Can I... go home with you?"

Since then, my plain and boring life seemed to become a little meaningful.

He would help me wash the pile of dirty clothes in the basin.

He would help me wipe off the imperceptible dust on the windowsill.

He would take the takeout out of my hand and learn to cook for me.

He would drag me, a lazy person, out for a walk after dinner.

As time went by, I got used to having Gu Huai by my side every day.

To the point where, in the end, I was afraid.

I was afraid he would remember his past.

I was afraid he would leave me alone.

Abandon me.

In the end.

Gu Huai still disappeared.

I remembered opening the door as usual that day.

But Gu Huai wasn't in the house.

I made countless phone calls and searched all the places he might have gone.

Still, I found nothing.

Everything returned to the way it was at the beginning.

The diary on the coffee table was open to the last page.

Gu Huai had written.

"Wen Wan, wait for me to come back."

And that wait lasted three years.