It ended pretty bad. The relationship between these two ended in a way, that left Death extremly heartbroken.
I thought it would be something like that he died then his soul got reincarnated but he had no memories of his past life so he forgot who Death was (and maybe now he is a human without knowing about supernaturals in general)
Did he die? Or was it a worse falling out?
The more you tell us of this the more I want to play, canāt wait.
To explain what exactly happened between Death and Sophiaās father, I have to explain a Little about Deathās past and the events that led to this rift. However, you are right with one of your assumptions. It was a falling out. A extremly worse one at that.
Warning: Long Post
As you probably already know, Death is the most powerful existing being within our universe. As the personification of both life and death she stands above all other beings, even above the various gods and the first Dragonās. All in all, she is a sentinent being with the important task to guide the Soulās of all the countless deceased beings into the afterlife.
As I explained about her, normally she would stand on the side lines and watch the progress of our world from afar. She would left all interactions with the other species and races to her Soul Collectors. However there were situations, were even Death wanted to interact with the other existing races and species. Sadly that was a little bit complicated because extremly powerful and perceptible powers, but luckily Death found a way to solve this problem. To be able to freely interact with the other species, she veiled her powerful aura and powers and disguised herself as a ordinary Reaper under the fake name āCatherine Parkerā. Through this she could spend time in the world of the mortals without exposing herself.
Catherine (Death) spend countless years in the various realms among the other races and beings. On this way she also met Tobias Coleman, a young Reaper which caught her interest. He was a quite charming and handsome individual and Catherine (despite being a sentinent being) felt strangely attracted towards him. In the end Catherine decided that she wanted to get to know him better (of course without exposing herself as Death) and so the two of them spend some time in each others company and with the passing time she slowly fell in love with him. This however was an entirely new feeling for Catherine. She saw before how other beings would fall in love with each other but never experienced it herself, but she was glad that she could experience this feeling for once.
The relationship between Catherine and Tobias grew during their spend time together and lastly even led to a more āintimate interactionā. For the first time in her existence Death felt truly happy. Then some time after this special interaction with Tobias she noticed some strange changes within her body. She often felt nauseous, extremly tired and also noticed certain mood swings. Only as her as stomach started to swell she realised what was actually going on with her. She was pregnant (a occurence that she honestly didnāt though was possible). However, even though that was an unexpected occurence for her it only increased her joy. She always had the wish to have children and maybe even to start a family but never found the time or the right partner. However, now her wish was about to be fulfilled.
Of course she wanted to share these good news with Tobias, but she couldnāt contact him. He didnāt responded to her calls and didnāt showed up to their previously determined dates. More and more time passed but he still didnāt responded to her and she started to realize that he tries to avoid her. However, Catherine didnāt wanted to leave it at that. She wanted to know the reason why he suddenly started to ignore and avoid her and in the end Catherine decided to use a small part of her real powers to locate him.
One of Deathās abilities is, that she can locate the Souls of all living beings, no matter their whereabouts. She can even see and hear what is around the being in question. She used this ability to locate Tobias and since she spend so much time in his Company she could easily find him. However, what she saw as she located him definitely broke her heart. She saw that he was in the company of another woman and the way they interacted with each other made it obvious that they were more than just friends. She also listened to their conversation and noticed, that all the things that Tobias said to this other woman were the same things that he said to her and which made her fall in love with.
However, in this moment she decided to use another one of her abilities on him. Death possesses the ability to gaze into the Souls of other beings and to see all their commited actions during the course of their life. Normally she would use this ability to decide if certain beings are worth to be let into the afterlife. However, this time she made a exception. So she looked into his Soul but what she saw shocked her. She saw countless other women all of them seduced by Tobias in the same way as she was. She saw that Tobias found great joy in toying with the feelings of woman and that he didnāt cared for their feelings or emotions. He only plays the role of the charming gentleman to satisfy his own desires and once he is satisfied he would simply drop his partner and would look for a new victim.
After seeing this she felt betrayed, emotional hurt and heartbroken. However, these Feelings were quite fast exchanged with a feeling of wrath and hatred and she decided to confront him. However, not as Catherine but as Death, the most powerful being within the universe.
When she confronted Tobias he first didnāt recognized her, but as he realized who she was and especially who she really was he started to Panic. He tried to apologize for ignoring her and tried again to use his charm, but it was already too late for that. Death truly loved him but he simply played with her feelings like he did many times before. Also, since she saw his true self she decided that he deserved a punishment for the detestable acts he commited. At first she simply wanted to kill him (which would have been quite easy since she could easily killed him with a flick of her Hand), however in the end she decided against it and choose another punishment. She stripped him of all of his extraordinary abilities and powers and once she was done he was even weaker than a normal human. However, she didnāt stopped at that. She also took away all his other unique characteristics, like his charm and charisma. In the end she sentenced him to live the rest of his life as a ordinary human, as just another plain face in the crowd. Knowing that Tobias despised the humans (like many non-humans) she knew that this would be a far more worse punishment than death.
However, before she parted ways with him she added one more crucial part. She told him that, if he would get close to another woman ever again, she would find a way to make his punishment even worse and with this words she left him to live the rest of his life as a normal human.
Well, this was basically the āshort versionā of the relationship between Death and Sophiaās father.
Oh, you donāt know how right you are. You see, there is one universal rule that is commonly known among all high class beings and entities.
"Donāt piss off Death", because if you do you are either screwed or dead. No matter if you are a God, a sentinent being or the most powerful creature on the planet. You will be still no match for Death.
Hmm I thought the punishment would be more severe than that.
For example after she made him a normal human she could take his beauty completely and make him extremely ugly and make him crippled and deformed as well. And she could also curse him with extremely long/immortal life so that heād have to stay his whole life this way and not be able to kill himself.
Anyway, how would Death reply to you romancing her daughter?
Ohhhā¦that story made me feel kinda sad tbhā¦
But i have a question: How does death feel about necromancy? I dont think someone like her would be too happy with denying souls ethernal restā¦
Finally someone who sees gods as beings who can die
Iām interested in the answer for that question, too.
My inital reaction was, that it would be even more difficult to get close to Sophia. First her outer personality and now her mother, who would -understandably- do everything she can to protect her daughter from the pain she had to endure. MC probably has to prove themselves -that they truely love and care for Sophia- alot of times. Oh and when she finally agrees, the obligatory āIf you break my daughters heart, Iāll break you in ways you canāt even imagineā¦ā
Well, I would ofcourse understand, if I donāt get an answer to that, since it would be very spoilery and probably take alot away from Sophias route. 
Death despises Necromancy and those who practice these art. The reason for this is, as you already said, that Necromancy denies the Souls of other beings their deserved rest, a fate that Death canāt allow to pass.
So, it might not that recommendable for your character to practice Necromancy. At least if you donāt want to land on Deathās bad side.
Donāt worry, I will keep the answer short and relatively spoiler free.
You see, Death (who would normally be adressed as Catherine within the game) would actually approve of the relationship between her daughter and the MC. As Sophiaās mother Catherine witnessed on first hand how the personality of her daughter changed during her years as a Soul Collector. It went even so far, that she feared that she would lose her sweet daughter entirely.
However, as I explained in one of my previous posts, by spending time with the MC Sophia would slowly discard her cold outer self and expose more of her real self. She would basically turn back to her real self because of her affection towards the MC. This is why Catherine would approve of a relationship between Sophia and the MC, because she believes that the MC might be able to āsaveā her daughter.
However, Catherine would still do everything she can to protect her daughter from the pain she had to endure through Tobias. So, while she might see you as the perfect partner for her daughter, she would still make it clear to you, that if you break Sophiaās heart you will experience a fate that would be far worse than death. As you already said: āIf you break my daughters heart, Iāll break you in ways you canāt even imagineā¦ā .
I hope I could answer your question with this.
Soooā¦i guess she wouldnt be so fond of soulmancer,necromancer and few more mancer trying to romance Her daughterā¦
well guess all plans for the childhood friend being my first path have gone out the window.
Why shouldnāt she be fond of a Soulmancer? Soulmancer are a race who can manipulate the energy of their Soul by nature, which means that they donāt oppose any of Deathās rules.
So, I hope you donāt mind but there is a question that I would really like to ask you. What is your opinion about Sophia after I shared all these informations about her (like her separate personalities or the identity of her mother) with you? Do you still see her in the same light as before or have I changed your views about her (in the good way of course)?
As I stated in a previous post, after knowing more about Sophia and her background, Iām even more excited to romance and generally interact with her, especially on the different levels of her personality. It will be a fresh experience (for me atleast), since it would be the first time Iām able to interact with someone who has two personalities in a game.
Iām looking forward to the scene, when - for the first time - her outer shell cracks a little and her kind and sweet presonality shines through. 
Getting to know her mother (and her reaction twords the MC) will be very interesting, too.
So, yeah saying Iām excited is an understatement
So well done there! 
Glad to know that you like her. I honestly feared, that knowing the true identity of Sophiaās mother might have been a little bit deterrent for you.
Well, Iām generally intrigued by thoughts about death(that sounds so wrong), souls and afterlife, which got me interested in Sophia in the firstplace(and the soulmancer^^). So now knowing who her mother is, makes it even more interesting and appeling for me.
In the TV show āLuciferā God did that to Kane. He didnāt make him ugly, but he did curse him to have eternal life/immortality for the crime of killing his brother Abel. He tried literally EVERY way to kill himself, but it couldnāt be done. To make it worse, it wouldnāt heal immediately I believe, but gradually kind of like a human, so it would hurt.
