It is outstanding Mecha anime so far. It doesn't give a vibe of justice defeat evil but some sort of slice of life anime with somehow accidentally involve with the super robot. It is very fresh and new and yet interesting. It still doesn't leak the plots that much but it is trying to persuade the audience (and the Gridman Fan) to watch more. This series tries to be more on a daily life event. Like when you play Persona 4 or 5. You are done working your daily routine and fighting the monster at the end of the day. Then finished the job and goto sleep.

Ps. If you prefer some flashy action scene. it does have some but not the whole.