It is necessary the last episode to appreciate the huge potentiality of the whole story despite of the bad storytelling where the behavior of the characters is not always congruent in their expressions. Another kind of defect deals with dialogues in both the Ultramen and enemies facing them as well, which often appear rather childish and trivially emphasized. The narration involves the main characters always in their Ultramen duties neglecting their ordinary lives almost entirely. Sometimes dialogues suffer from audio alteration and in some rare scene they are completely missed, at least in the transposition of my language. The name of the protagonist is often boring repeated as if the other characters have no importance.
I have to see the last episode again to understand the plot better.