Responses
Yes, happy ending:)
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But I don't think this manhwa version explained how and why nanyoung rumoured to be adopted.
Novel ver not adopted. Real blood related.
Manhwa ver, (mc) nanyoung is adopted.
Altho yes i think they make it "adopted" because the inc3st rhink, but I think the author should explained the detailed as how nanyoung become adopted. Just my opinion tho :D

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After checking the raws, i think it Ended at ch 70.
The ending are like the novel but not quite detailed.
I hope there are side stories when they live after that ending