"Yeah...because you broke the rules!"

- Suguru lambasts Kōichi, and blames him for Yukari's death.

Suguru Yamada (山田 優, Yamada Suguru) was a student in Class 3-3 of 1998. He sat directly in front of Kōichi Sakakibara and Yukari Sakuragi. He is played by Amane Okayama.

Suguru was one of the students who rushed out of class and saw Yukari's body. He held Kōichi responsible for her death, insisting he'd broken the rules, much to Kōichi's confusion. The next day, he blatantly ignored Kōichi when his classmate asked him what was going on, confusing an already shocked Kōichi further.

A few weeks later, he and Yūya Mochizuki were riding their bikes on the edge of town, scoffing at the curse. Suguru declared it wouldn't be that hard to beat, as all one had to do was escape Yomiyama City. Ironically, a few minutes later, the brakes on his bike failed, and Suguru rode into oncoming traffic, where he was hit by a car and killed instantly. Horrified, Yūya fled the scene, leaving a confused motorist with his friend's body.

The next school day, a distraught Takako Sugiura placed a memorial flower on his desk before breaking down in tears and exclaiming that it no longer mattered whether or not they ignored Kōichi and Mei anymore.