<p>I don't believe it was ever explicitly stated <em>how</em>, although it's been <strong>heavily</strong> implied.</p>
<p>There <em>was</em> a scene at some point or another where Nezuko (or Nesuko, whatever your preferred spelling is) ate a blue spider lily when she was still human. It is shown that Kie (her mother) fed her a blue spider lily as an ingredient in a food, which I believe was a soup, but that's irrelevant to the story as far as I can tell. It's also been implied that Kie knew something we, the audience, did not. That's about all I know about it, though, so I'll just put it down to the Blue Spider Lily.</p>

CC BY-SA 4.0
2024-05-15T19:47:19.240Z
The blue spider lily was the plant which was supposed to cure Muzan?
Pablo
CC BY-SA 4.0
2024-05-16T02:19:23.810Z
@Pablo Yes. Kie knew something we didn't, I'm sure
Austin Overton
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2024-08-12T05:25:18.487Z
At what Season/episode did that happen? I would very much like to know.
Ghibli Fan 007
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2024-08-12T20:43:09.940Z
@GhibliFan007 I don't think it was shown explicitly, but it was heavily implied that she ate a spider lily in the form of a soup. My memory is fuzzy, but I'll have to go back and see.
Austin Overton
CC BY-SA 4.0
2024-08-12T23:39:12.153Z
@AustinOverton Do you think this scene is in the infinity castle arc? Because I haven't watched Infinity castle arc, it's not yet released in my region.
Ghibli Fan 007
CC BY-SA 4.0
2024-08-13T01:58:09.680Z
@GhibliFan007 possibly. I don't remember explicily.
Austin Overton
CC BY-SA 4.0
2024-08-19T18:23:26.353Z
@AustinOverton Although I still can't find the scene in the anime, many sources stated that the scene is in the second data book of Demon Slayer. I guess it's not in either the anime or manga but in supplemental sources.
Ghibli Fan 007
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2024-08-19T19:15:42.577Z
@GhibliFan007 I suppose I must've imagined it then, my apologies!
Austin Overton
CC BY-SA 4.0
2024-08-19T19:18:30.517Z
@AustinOverton You probably didn't imagined it, just that you managed to get the data books. I want them soo much.
Ghibli Fan 007
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2024-08-19T19:19:52.443Z
@AustinOverton Anyway, check out my answer to a similar, but newer question on this site: https://anime.stackexchange.com/questions/68953/how-did-nezuko-conquer-the-sun/69012#69012.
Ghibli Fan 007
CC BY-SA 4.0
2024-05-15T17:13:50.533Z
2024-05-15T17:13:50.533Z
Austin Overton
<p>In episode 1 season 4 of the anime, it's mentioned that Muzan is going to come for Nezuko because she's the only demon who got immune to sunlight. Why did this happen?</p>

CC BY-SA 4.0
2024-05-16T12:14:12.427Z
I think the mystery will be revealed in the next season by Tamayo who is herself a demon and seemed like she figured out something once she heard the news about Nezuko.
und3rh00ds
CC BY-SA 4.0
2024-08-19T19:21:10.263Z
@Pablo Please check out my answer to another similar question: https://anime.stackexchange.com/questions/68953/how-did-nezuko-conquer-the-sun/69012#69012. It may help.
Ghibli Fan 007
<demon-slayer>
Why did Nesuko become immune to sunlight?
# Why did Nesuko become immune to sunlight?
Posted by: username_0 on 2024-05-13
In episode 1 season 4 of the anime, it's mentioned that Muzan is going to come for Nezuko because she's the only demon who got immune to sunlight. Why did this happen?
**Tags:** demon-slayer
> **Comments:**
> **username_1**: I think the mystery will be revealed in the next season by Tamayo who is herself a demon and seemed like she figured out something once she heard the news about Nezuko.  
> **username_2**: @Pablo Please check out my answer to another similar question: https://anime.stackexchange.com/questions/68953/how-did-nezuko-conquer-the-sun/69012#69012. It may help.  
---
## 1 answers
### Answer by username_3 on 2024-05-15. Score: 3 | Accepted answer
I don't believe it was ever explicitly stated *how*, although it's been **heavily** implied.

There *was* a scene at some point or another where Nezuko (or Nesuko, whatever your preferred spelling is) ate a blue spider lily when she was still human. It is shown that Kie (her mother) fed her a blue spider lily as an ingredient in a food, which I believe was a soup, but that's irrelevant to the story as far as I can tell. It's also been implied that Kie knew something we, the audience, did not. That's about all I know about it, though, so I'll just put it down to the Blue Spider Lily.
> **Comments:**
> **username_0** (2024-05-15): The blue spider lily was the plant which was supposed to cure Muzan?  
> **username_3** (2024-05-16): @Pablo Yes. Kie knew something we didn't, I'm sure  
> **username_2** (2024-08-12): At what Season/episode did that happen? I would very much like to know.  
> **username_3** (2024-08-12): @GhibliFan007 I don't think it was shown explicitly, but it was heavily implied that she ate a spider lily in the form of a soup. My memory is fuzzy, but I'll have to go back and see.  
> **username_2** (2024-08-12): @AustinOverton Do you think this scene is in the infinity castle arc? Because I haven't watched Infinity castle arc, it's not yet released in my region.  
> **username_3** (2024-08-13): @GhibliFan007 possibly. I don't remember explicily.  
> **username_2** (2024-08-19): @AustinOverton Although I still can't find the scene in the anime, many sources stated that the scene is in the second data book of Demon Slayer. I guess it's not in either the anime or manga but in supplemental sources.  
> **username_3** (2024-08-19): @GhibliFan007 I suppose I must've imagined it then, my apologies!  
> **username_2** (2024-08-19): @AustinOverton You probably didn't imagined it, just that you managed to get the data books. I want them soo much.  
> **username_2** (2024-08-19): @AustinOverton Anyway, check out my answer to a similar, but newer question on this site: https://anime.stackexchange.com/questions/68953/how-did-nezuko-conquer-the-sun/69012#69012.  
---
