Are you talking about that one scene where two of them aimed guns at both Miki and Akiro? That was the only time I saw any sign of dissent, and that was right after the TV broadcast that stated Akiro was a demon. Even then, however, the two that pointed their guns at them lowered them and acted as though they would help. If they really wanted to kill them, they could have done so then.

Instead, to try and shock the audience, they are made to try and act nice, and then suddenly pull a "gotcha" moment right when the mob arrives. It was stated they arrived due to a tipoff, but none of them were shown on their phones or trying to contact anyone, so it could have been literally anyone that called in the mob.

My problem is that, on the first viewing, unless the typical viewer paid VERY close attention and kept track of the conventions set forth in the series, they wouldn't even suspect the betrayal, especially since the only misgiving they showed was when Akiro was revealed to be a demon. If they tried shooting at them AND THEN joined the mob, I would have no problem with it, but the sudden betrayal after you think everything is fine, although effective otherwise, fell rather flat here due to the fast-paced nature of the show and lack of side-character development.