Spoilers (very brief summary)
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Amelia's a little bitch. Claudia goes to war on her own with the army. Claudia secures a super easy victory and they come back home. Amelia is a bitch. She invades the victory party and tries to make Claudia be killed for terrible reasons. Light spirit king basically discards the bitch, and gives Claudia a blessing. Hallelujah Claudia now has light skin (because apparently that's a side effect of the light spirit kings blessing) and now is getting invites to parties and her mother is speaking to her and people are trying to get engaged to her. Cutie McEldest prince finally confesses his feelings to Claudia after comforting her while she's upset about the two faced bitches that are everywhere. And that's about as far as I got.

Based on the comments I’m reading in the novel I should drop this manga since it’s going to go downhill