Plot holes you find in manga/manhwa/manhua

Have u seen a plot hole in a story you were reading? Feel free to drop them here, educate us, and share your thoughts.

I'll start, I re-read My Darling Signed In and I noticed that Lucia was targeted by Lee Yeonwoo (creator of MMORPG Illusion World) because of how helpful she as a player who has been there since the beta test. This doesn't add up since Lucia was a brand new account with a catfishing avatar Jaehyun made after his previous character got hacked and robbed.