"Are you The Reaper?" The one who asked was Daichi.
When he saw Tenku appear, he felt confused as he noticed the expressions of the Realizers around him. Daichi quickly figures out his identity as The Reaper after hearing their words.
He was unhappy because he felt Tenku was arrogant and pretending to be cool by coming to that place on his motorcycle. Moreover, Daichi envied that an illegal Realizer could become famous and respected.
Daichi is annoyed but can't do anything because he hears The Reaper is mighty. So he decided to stay silent and suppressed his displeasure with Tenku. But after Daichi discovered that Tenku only had powers in the asteroid phase, he smirked and walked over to him.
When Akio saw Daichi suddenly get up from his seat, he asked, and his best friend said he wanted to chat with Tenku. So Akio and the others didn't stop him.
Tenku glanced at Daichi briefly and then ignored him. Daichi was very angry because he thought Tenku looked down on him.