Lu Sen knew that Ulala was a person who always avoided feelings. Maybe it was a mistake to pull her into his world so abruptly in the end. He had no regrets. He would love her and accept him in his own way.
Ulala only realized after Lu Sen left inexplicably that she had become accustomed to living with Lu Sen. She was unwilling to admit that she regretted it, but would Lu Sen come back? Maybe tomorrow.