So, later on in the series, during the fight against Zeref, we see Mirajane use Satan-Soul but she also used souls that she had collected during the Tartaros arc. My question is: why can't she fight for long and how did she collect so many souls if she can't fight?

  • she stated "the stronger demon from she uses, the more energy it costs"
    – xmastertje
    Jul 24, 2019 at 13:27

2 Answers 2


because you see multiple people run out of magic power throughout the show and she won't want to overdo it and be so exhausted not to move like Erza in the edolas arc and she might have finished the tartaros people off fast or with help

  • Please include relevant sources/references to support your answer.
    – W. Are
    Apr 30, 2020 at 11:26

My theory is mirajane's personal preference/Personality is as such!

In the starting episodes of Fairly Tale, we only saw her as a simple girl. During the episodes about Lisanna story, we also learn that she used to be aggresive but after the Lisanna death she changed completely.

As I understand, Natsu though trainings improved his strength and stamina but mirajane did not improve as much.

(During the initial episodes) For me the shocker was when we learn that she too has magic and that too very power stuff (S class level). But, I see that most of the time, she preferred being a sweet girl, who enjoyed modelling and take cares of her friends.

(Also the story is about Natsu, if mirajane is too powerful it would overshadow lots of stuff :)

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