Jorucho

First and foremost, she's treated seriously as traitor and enemy. Obviously because she has sided with Camelot, but we can still say that it means her motive aka her "feelings" for Lancelot isn't shown in a good light enough to justify her betrayal.

Her falling for Lancelot is NOT normalized. When speaking of her relationship with Lancelot, everyone immediately thinks of that of a mentor-student and older sister/younger brother, that means it is considered totally not normal for Jericho to fall in love with a kid like Lancelot. The phrases "family", "master", "sister" and the likes are used repeatedly to highlighted the contrast between her actual feelings for Lancelot how she should feel towards him.

It is clear that Jericho also expresses shame about that, as shown when she cut Guila off. She herself said that it was disgusting, and she ran away because she knew common sense and that "love" of her was inappropriate.

In conclusion, her inappropriate feelings are not condoned, she is shown under a bad light, and treated as an enemy. If you feel disgust reading this, then that is GOOD, because you are supposed to do that, the narrative wants you to be disgusted by this.

But then why do I hate it? Because it did Jericho so so so dirty.

Why must she fall for Lancelot? Her hopelessly gushing over Ban was not enough? Why must she be the pedophilic villain, fooled by Arthur and betray her comrades for a fictional world he promised her?

I used to like her so much! She's funny to read, she's compassionate, she also has flaws and that's what fleshes her out as a human. Her character arc was basically completed in 7DS: She got over her crush for Ban, kind of stopped arguing pointlessly with her brother (because he uhhh died), awoke to her magic, and with Gustav's death she could then see Ban as her brother figure just like how he saw her as his little sister. It was perfect.

There's literally no reason for Jericho to become like this. It's just so fucking sad.