"The incest part of spy x family ruins it" SHUT UP, your wrong, Yuri Briar is a complex character and to put it as a "weird incest thing" is wrong.
First, Yuri has never implied he wanted any sexual relations with his sister, the most he has said is he loves her and wants to marry her, and that isnt weird if you put in the context that Yuri and Yor are both children who suffered from the war. They didnt have parents to take care of them, that burden was put onto Yor as the older sibling. Yuri looks up to her for that and wants to prove to Yor that he can protect them too. Yuri doesnt understand the complexities of love because he was never taught it, he loves his sister and wants to protect her and has gotten his feelings confused for wanting to marry her. "but hes so weird around loid" IN HIS CHILDHOOD IT WAS ONLY HIM AND HIS SISTER HE IS GOING TO HAVE TROUBLE TRUSTING OTHERS.
They grew up in a war, A WAR. Thats going to have a mental toll on your character, Yuri has taken this by wanting to protect who he loves. Yuri doesnt have anyone outside of Yor he is going to be confused on what his love means.
Loid has mentioned how he is jealous of Yors and Yuris relationship because its so close, and they have eachother to rely on, something Loid didnt get as a child. Loid doesnt see Yuri as a threat to him and Yor.
You can see how he grows through the story and accepts that Yor has found another person to trust and rely on and he doesnt have to carry that burden alone. He has slowly been letting go and giving Loid a chance to be there for Yor and Loid has proven he can and will be there for her, and yuri is grateful and even takes up tutoring Anya, it doesnt work out but he still tries to be supportive to his sister.
In conclusion Yuri briar did not ruin the plot of spy x family with a weird incest trope, if you look at the dialoge and think deeper in on the story, you can observe Yuris growth as a person.
apologies if this doesnt make sense i just hate people who missread the story of Yuris character
