A World That Only I Remember

"Can you really go back in time?" A girl in a dress stood under a big tree and turned to look at me. Her eyes were very complicated. I could only vaguely see a hint of sadness in her eyes. "Maybe." I followed the girl's conversation and could only see her brown eyes, but I could never see her face clearly. "Will there be memories after looking back?" "Except for the person involved, there should be no one." "If we go back in time, even if I forget you, please come to me." "Hmm..."