If I remember well it's because the Crown Prince and the Pope used Arielle in the original story for political gains and made her into a fake saintess. Once Camilla appeared they didn't need Arielle anymore so they killed her. While she was alive they both also weren't nice to her at all. I dont remember Lloyd doing anything to the og Arielle, but he is similar to the Pope and the Crown Prince in that he uses people for his benefit and then tosses them away. The last ML, Diego, is a demon. They are all similar in that they though Arielle was someone expendable. They're people who treat others poorly.
tbh it's been so long since I started reading I forgot why y'all calling all the MLs red flags (/TДT)/ except for Reihas, he's very memorable LMAO
tends to remind us every few chapters too hahaha
BUT I LOVE THEM ALL SM
AND THIS STORY
IDK WHY - IT FEELS JUST SO ORIGINAL IN CONTRAST TO OTHER SAINT ISEKAI STORIES Σ(  ̄□ ̄||)
Camilla needs to be bitchslapped real hard, even harder, for what she did to my bby boi Reihas (︶︿︶)=凸 i freaked so hard at that scene
and ngl but uhhh prince guy is getting more and more handsome from chapter to chapter, i disliked him at the beginning but i've been saving every panel with him the last ten, twenty chapterssssss