>>941496422
It's actually pretty straightforward.

Sensei arrives after the General Student Council President disappears from Kivotos and helps keeps everything together. He goes around helping every student at every school for nothing in return because adult responsibilities.

All the students have guns and halos. All the civilians are animals or robots. Students run everything from the government to the police department.

The main story is heartwarming and fun to read. The side stories and relationship stories are silly and funny to read.

And also, Neru is in it