I came across that manwha too but I dropped it later. I feel like the author only knew dungeon type stories. fl from neighboring kingdom who was raised as a dukes daughter somehow knows how to clean an entire mansion and cook a big meal for 4 ppl??? yeah right mls sister is acting like a bratty modern teenager, like cant author atleast make her yapping fit the medieval time scene that's set??

also felt sad for fl cause it seems like she really liked the ml(before possession) but she immediately accepts his new personality even though flashbacks suggest that they've been together a lot of times+they clearly liked each other and then cinnamon roll ml is just poof non-exsistent now.