
Here, an explanation of the Mugo in general:
https://www.mangago.zone/home/mangatopic/19223991/
And if you are crying about the sex scenes:
https://www.mangago.zone/home/mangatopic/19227055/
If you don't understand who the actual nice guy is:
https://www.mangago.zone/home/mangatopic/19227218/
And if you want my prediction : https://www.mangago.zone/home/mangatopic/19223828/

The 4th Mugo is the one who gave the MC the key to not be eaten, it wasn't glasses Mugo. Glasses Mugo is in favor of eating sacrifices, Mean Mugo just goes along with it and 4th Mugo stopped them from eating this one by telling MC to bring Glasses Mugo something sweet. That's why Glasses Mugo saved him, not because he originally wanted to.
The MC's protector is the 4th Mugo.

Plot bits and indicators are dropped during the sex scenes. Usually when a story has this much I skip them, like Full Volume. But in this story you have to read them because there are clues about the Mugo's identity and psychology as well as where their relationship actually stands.
The way these two characters are written, with the situation they're in, sex is actually the only way to make them communicate intimately without being incoherent with the characters' personalities.
While your criticism could have been valid for Full Volume, where the sex scenes are pretty irrelevant 90% of the time, this isn't the case here.
It's just added scenes that won't kill you, and in this story it is actually relevant, not for the sex itself but rather for how the sex is inserted in their relationship.

Since many people are also confused about Mugo:
No, there is no "main Mugo" they are all Mugo. However the don't have the same role in the system, meaning they don't have the same powers.
Glasses Mugo is a protector and a host, that's why he has more power over Mean and Monster. He needs to control who is in front, and only fails when the trigger is too strong.
Mean Mugo is a persecutor. He's trying to protect them by being rough. He also suffers emotionally from decisions made by Glasses Mugo because he disagrees.
Monster Mugo is akin to a child, he probably is a childish personality in the form of a monster in their mind, but appears as Mugo/snake because that's what the body physically is.
The 4th Mugo is a trauma holder and a host. As a trauma holder, he fully remembers the trauma that let them there, including memories that could be fuzzy/forgotten by other Mugo's. He is also a host, and because he is also a trauma holder, he recognized the MC from their past life, unlike the others who don't fully understand the situation. He is also a host, and probably a protector.
The fact that the other personalities don't know about him gives him the power to appear without their knowledge. Their dissociation comes with memory loss, so they don't necessarily remember what the others did, and sometimes, if another personality takes over forcefully, they don't know which personality. And because of the memory gap, they don't even know.
Usually people with dissociative disorders that include memory loss can tell there's an issue because people around them tell them what they did or things were moved. In this case, Glasses Mugo couldn't tell because there was no clear indicator and he genuinely thought there were only 3 of them.
You are welcome.
And if you want my prediction : https://www.mangago.zone/home/mangatopic/19223828/
And if you are crying about the sex scenes:
https://www.mangago.zone/home/mangatopic/19227055/
If you don't understand who the actual nice guy is:
https://www.mangago.zone/home/mangatopic/19227218/

Yeah it's basically the same pattern as many other past life lover stories:
- vengeful ancient spirit exists
- for whatever reason, modern man meets him
- they are weirdly attracted to each other and sexually compatible
- the spirit wants him by his side
- MC discovers he is the angry spirit's past lover who died / left ttragically
That's the recipe.
I felt sorry for the demon but what's with the smirk at the end?
rela, i was about to write a whole ass essay about how fucked up human can be. i was about to release my inner Shakespeare. i think he's an incubator or something
incubus* helppp
Wtf why is the reply shown after approved
Lmfaooooo incubator
Bro your comment wasn't shown immediately, it said it would be visible when approved what exactly did you do to MangaGo to end up restricted? It's almost impossible
I dunno, I just did what everyone do, reading and writing comments
Why mangago
i was typing so fast, lolol.