*spoilers up to Inter High Day 3, chapter 160
Why did Imaizumi believe Midousuji’s lie? More importantly, why did Midousuji arm his psychological assault with the notion of one’s mother?
Imaizumi introduced as skilled and distinguished cyclist. As we learned more about him, we heard the name of Midousuji, whose presence acted as driving force behind Imaizumi’s rigorous training as well as his intense bearing in general.
It began with one fateful race. They participated as fellow junior high schoolers. In the middle of it, Midousuji aligned his bike close and said:
"The staff were just looking for you. You’re number 472, right? Your mother was run over a bike. She was calling your name."
Watanabe-sensei never told us where Imaizumi’s mother was at that time. She could be anywhere. She could be at home, even. Yet, from worried look on Imaizumi’s face, we know that the thought of finding his mother died was anything but light.
Prior meeting Onoda and Naruko, Imaizumi didn’t have any friends. Sure, there was Miki, but he was aloof with her most of the time. If it meant that he could be at the front, Imaizumi was content with riding alone. Leading the pack offered him comforting solitude. He appreciated the idea of singularity. So how could Midousuji sent his spirit reeling?