<p>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</p>

CC BY-SA 4.0
2020-04-30T11:26:38.787Z
Please include relevant sources/references to support your answer.
W. Are
CC BY-SA 4.0
2020-04-22T08:37:43.140Z
2020-04-22T08:37:43.140Z
user52920
<p>My theory is mirajane's personal preference/Personality is as such!</p>
<p>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.</p>
<p>As I understand, Natsu though trainings improved his strength and stamina but mirajane did not improve as much.</p>
<p>(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.</p>
<p>(Also the story is about Natsu, if mirajane is too powerful it would overshadow lots of stuff :)</p>

CC BY-SA 4.0
2022-05-12T12:30:38.593Z
2022-05-12T12:30:38.593Z
sam
<p>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?</p>

CC BY-SA 4.0
2019-07-24T13:27:27.037Z
she stated "the stronger demon from she uses, the more energy it costs"
xmastertje
<fairy-tail>
Why can't Mirajane use magic for long periods of time?
# Why can't Mirajane use magic for long periods of time?
Posted by: username_0 on 2019-07-22
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?
**Tags:** fairy-tail
> **Comments:**
> **username_1**: she stated "the stronger demon from she uses, the more energy it costs"  
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## 2 answers
### Answer by username_2 on 2020-04-22. Score: 1
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
> **Comments:**
> **username_3** (2020-04-30): Please include relevant sources/references to support your answer.  
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### Answer by username_4 on 2022-05-12. Score: 1
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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