Do you think 'Sooner or later you're gonna be mine is toxic as hell? (undertale au comic)

Sooner or later you're gonna be mine is so weird to me. One it is a undertale au which I have no problem with (I am a big undertale fan) but this one makes me feel uncomfortable like when I heard of underlust. For context this is a mafia love story between Frisk & Sans set when mob bosses were a big deal (Sans is a mob boss and Frisk is a singer in a bar/club). One thing I thought was weird is when they age up Frisk to be with Sans. Yes I know a lot of media does this but I still think it's weird. Sans is also a unlikeable jackass who is just disgusting. He legit went in the woman's bathroom just to see Frisk (Frisk doesn't even know him btw) and gets mad when she shows no interest him, he then slams her head into a wall TWO times and calls her rude for not liking him back. Then after all that when Frisk still didn't show any interest he tries to talk to her calmly asking for a hand shake. LIKE WHAT?!?!?!? HOW AM I SUPPOSE TO LIKE HIM WHEN HE IS DOING THIS SHIT!!?!???!?!?! Then he admits to stalking her (He said he was joking but we both know that was a lie) Then he takes over her town space and tell her he is raising the protection fee knowing that the people Frisk lives around can't afford it and then says he would lower it if she goes on a date with him. HELLO BLACK MAIL?!?!?!?! AND THEN HE FANTASIZE ABOUT BEING IN HER BEDROOM IF THEY WENT ON THIS 'SO CALL DATE'. Not only is Sans in this is a predator but he is such a two face person. I also hate how the author tries to make Sans look like a good guy after doing all the shit he does and the I am suppose to sit back and love there toxic shit show of a love story? HELL NO!!! Papyrus is the only good character. ;_;. Don't read dark romance kids it fucks up your head.