You're reading it right, this movie really reminds me of storylines from the american superhero comics a là Batman: Knightfall or Batman: shaman, the ones where the titular character is injured and he/she has to go to some secluded spot to heal, train and come back to kick more asses than before. Not only that but it's even better than those since it doesn't waste your time with hours and hours for no reasons than to suck money out of you with tie-ins or stuff like that. It's also nice that the Doctor X superheroine is, in fact, a normal human who trusts other people (Kaji) and who can be hurt and have failures, even if she ends performing her Burakku Jakku-like surgeries at the end. To add the cherry to the cake, luckily this time the reuse of stuff seen in previous seasons is limited to some scene and a cameo of a character from season 3, so it's not as bothersome as in the proper season 4. I just wonder why they kept the original (I mean original for this show, not generally speaking) ideas for this special instead of applying them to the majority of the main course, but whatever it's good stuff nonetheless.
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