I saw a reader asking in the reviews why Lu suddenly started liking Toge Inumaki. Actually, I planted foreshadowing for this.
Right at the beginning, before Lu time-traveled, after he finished cosplaying and changed his clothes, there was a girl who knew he was no longer in cosplay and wanted to add him on WeChat. Everyone probably knows about this—Lu obviously understood what was going on, but he had no interest in that sort of thing, so he turned the girl down.
Lu was already 19 years old at that time. I wrote about it in one of the chapters; if you look closely, you will see that he proved his past life was 19 years ago. It is impossible for him to be only 14 in this life—could it be that he was only five years old in his previous life?
Chapter 61