Thinking about a poly Thorfinn/Canute/Reader and they both happen to be yanderes. They meet you while Thorfinn and you were guarding the young prince. Thorfinn has known you for several years and has grown close to you over that time, so naturally he is possessive and overprotective of you. You are in a band of ruthless mercenaries, not to mention Askeladd; why wouldn't he act the least bit protective over you?
Then you add Canute to the mix, and suddenly Thorfinn is threatening to knife anyone who comes close enough to either of you two. For what it's worth, his feelings stem from his fear of losing the only healthy person who has been consistent in his life. His father was killed, Askeladd is toxic, and the rest of the band just has bloodlust. Okay, maybe Bjorn is a small exception because he does act like a mother towards Thorfinn sometimes but still ultimately sides with Askeladd. Still, you are the only one who is allowed to patch up his wounds and sleep next to him at night.
So then we have Canute, who is barely able to talk with you because Thorfinn is staring daggers (both figuratively and literally) at him. So as their travels progress and Canite gets bolder, he slowly grows closer to you, and Thorfinn hates that. He would kill the pretty little blonde if it weren't for Askeladd promising him a duel if he kept the prince safe.
One night, it all comes to a climax when you are sleeping next to Thorfinn. They both end up in an argument over their behavior, and Thorfinn accidentally outs himself.
"Why do you have to be such a stupid, pretty little blonde?"
"You think I'm pretty Thorfinn?"
"That's not what I meant, Princess."
Thorfinn gets all pouty and embarrassed.
Canute feels like he has the upper hand just this once, so he proposes sharing you between the two young men. Thorfinn is almost entirely opposed to this idea, but for some odd reason, he nods and agrees with Canute. Only if Thorfinn is allowed to stay near you at all times.
Thorfinn and Canute are two completely different yanderes whose tendencies stem from the same thing: fear. Thorfinn has a fear of losing you and wants your love and attention (even if he won't admit it). Canute has a fear of not being loved, as he isn't loved by his father, and he wants to be loved by the person who has shown him some love. Thorfinn is aggressive and very outward about how protective he is of you, while Canute opts for a more quiet and cunning approach. Oh, they were bothering you? Either Thorfinn is straight up murdering them, or Canute will order someone to take care of them for him. Thorfinn needs your attention and praise constantly (in his distant and grumpy way), while Canute is content just being looked at by you. Thorfinn is possessive, while Canute is obsessive. Canute will practically worship the land you walk on, while Thorfinn will see you as his only equal.
They are opposites, yet they mesh well together.
They don't realize that they also have feelings for each other until after the King and Askeladd's deaths. Thorfinn was so very torn as he saw you standing near Canute with a shocked and pained expression on your face. He felt his heart and trust break into so many pieces as he saw Canute open and vulnerable for a killing strike. Yet he only slashed the edge of Canute's cheek as he realized that he couldn't kill the pretty little blonde. He couldn't hurt or be mad at you either. He just felt confused.
Canute knows that he has to act like a leader, so he orders everyone out except for you and Thorfinn.
Canute confesses that he has developed romantic feelings for both you and Thorfinn during your travels together. He thought you both looked so attractive while protecting him from people trying to kill him. He states that he is unable to live a life if Thorfinn hates him, and he offers Thorfinn the sword that killed Askeladd to slit his throat if he would like. Thorfinn takes the sword and shakes as tears escape his eyes. He can't. He can't kill the stupid blonde. He loves him. He loves you. He loves how you constantly care for him and stay near him even when he pushes you away. He loves Canute because he just loves him. He doesn't know when he started, and he is scared that he won't be able to stop.
He allows the sword to clatter onto the ground as he pulls both of you into a tight and warm hug.
Cue Canutes religious guilt and his breakdown of what his beliefs are all while romantically loving two people, one of whom is a man.
You stare at them with a perplexed expression as they both clumsily confess their love for you as well (leaving out that they will and have already murdered for you).
The only question that remains is: What will happen next? Will all three of you live with Canute? Will Thorfinn start a journey of self-discovery and end up traveling to Vinland? Will you ever figure out that their love isn't so innocent and that you won't ever escape from them?







