Welp, I will start with the end, the idea is that the "true" ending is based on saving someone that have been commiting all the anomalies in the A.U, let me explain, the reason everybody is trapped underground is because anybody has been able to pass to the barrier due to a corruption that had been since years, the objective is to delete this corruption so the human pass to the barrier and breaks it, but the thing is, the one making all this corruption is a monster, indeed, a lady
This lady used to be a normal boss monster (also known as the old queen) , but due to knowing about the timelines and being kind of apart from society, she tried to find a way to set herself free, in this process, she found a strange room (that was near the throne room) there, she found a lost soul, but this soul was a corrupted one, even though, she decided to try to take it, but, when she did that the soul took control over her and started to corrupt all around (take that soul as a "Chara")
this corruption blocked the acces to the throne room, taking all the monsters that where there in the process, when that happened the "sans" (I haven´t though of the name yet) protected the other zones from this corruption to advance by makin a spell that enclosed all of this corruption into a room (the key to this room is given by him if you probe that you are able to do something about it, the next post I will publish my ideas for the different routes)
After this, the information about the incident was hidden to all the other monsters and their lives continued as normal, that until a new human arrived into the underground, the typicall A.U way to start (I would love to make a hole new set of characters and zones but I am SO bad making art so, yea, I hope making this publicity helps to the goal)
Welp, the ideas of the routes is, one you decide to kill everyone and using your love power you are able to pass trough the corruption and just leave the place alone, that including the queen trying to stop you as a final boss, that with the help of the "sans" both fighting to stop you.
The neutral is kind of the same, boring one, but the difference is that the "sans" will just give you the key to enter the room and finish everything (also if you do the pacifist you will do this, is kind of necessary for saving the queen)
Like Reply
In the pacifist (which is kind of the hardest one) after you probed you don't wish to kill anyone, the "sans" will tell you about the truth of what happened, here he gives you the key (which if you haven´t done the neutral run, you can use to fight the queen) and a small clue on how to save the queen, the way is to find all the scattered soul fragments all around, here I still thinking in how to do it, but my two starter ideas are the next: new hole map with mini bosses (i think is boring) or
Or unlocking new rooms around the map and there you being able to fight against the lost souls, this for showing them that you wish to help, now having all the souls, you can use it to make a neutral run, just going away or fighting the queen, a Three pashes boss fight, the souls allowing you not to get corrupted in the second one, in the third one the “sans” entering to help her old coughs Friend coughs (in the G route you are already corrupted so the corruption ignores you and in neutral when you escape your soul ends half corrupted and useless)
I really am so new an all this (also, english isn´t my main language so sorry for grammar I will be checking this if anyone is intereseted on this)