On the first day of school, Li Xing made Professor Gu the headline of the campus forum.
He accidentally knocked over a reagent tube in the laboratory, and in panic grabbed the wrist of the man who came to the rescue.
Unexpectedly, from the surveillance camera's perspective, he pinned the cold Professor Gu against the wall.
"Are all students today so enthusiastic?" Gu Yu pinched the back of the boy's neck and chuckled, but his eyes were fixed on the light mole on his right cheek.
Li Xing ran away, but he always thought of the warmth of that embrace late at night - it was like the warm arms that were always vague in his memory.
Everyone said that Professor Gu was a flower on the high mountain, but no one knew that he had a yellowing sketchbook locked in his drawer. For more than 20 years, the portrait of the child with the mole on his cheek has written "my fault" on every page.
At the welcome party, Li Xing performed guitar playing and singing. When the young man raised his head under the spotlight, the Jade Guanyin pendant that slipped out of his collar made Gu Yu's pupils shrink suddenly - it was what Li Xing's mother had asked for for him, and it was also the last memory she left for Li Xing.
"Do you want to catch him? Teacher Gu." Li Xing was blocked in the office, his breath spraying on the man's Adam's apple, "During the surveillance, your ears were so red that they were almost bleeding."
Gu Yu grabbed his waist and pressed it against the table, stroking the mole that had tortured him for half his life: "The stars I lost back then will have to spend the rest of my life to pay for it this time."
Later, in the psychological clinic, Li Xing trembled when he looked at the memory scene awakened by hypnosis: when he was fifteen years old, in the blood mist, it was the twenty-year-old Gu Yu who tightly covered his eyes and tremblingly hummed their exclusive lullaby.
"Remember?" Gu Yu hugged the crying person, "Now it's my turn to collect the debt - you owe me goodnight kisses for five years."
Purpose: Redemption and growth