
I'm thinking of 2 possibilities:
1. That backlash, or rather the "cost" (the misfortune that she will face), could've been referring to the Lord himself. Whereas she gets to experience Lex, as a result of the magic, she also has to experience the normal Lord (not under magic), you know, give and take. In return for the "dream" lord (Lex), she also has to suffer (not that she does, anymore) through the normal cold lord.
2. The other possibility of the "cost" could be Lex turning yandere or something similar. Maybe the longer he remains as such, the "love" he showers her with will turn obsessive, or perhaps turn sour.

1. um, yeah, pretty sure 6 year olds don't have hair that long. Or that level of intelligence (even if Ursch is a genius, or whatever). They are most definitely not that tall, and in her case, since she's supposedly in her late twenties (mentally), shouldn't she look upon Ursch as, like, a little kid? Like omg how cute, *squeezes cheeks*, and not "omg love interest marry me now." Because in context, that be predatory, man.
And again, preTTy sure, it ain't natural for 6-year olds to be so developed.
2. 999 HP doesn't seem reasonable. If she has 999 MP, and is lvl. 99 herself, shouldn't the hp be somewhere around 9999? or at least above 1500+, considering how it isn't very... logical MP and HP. Generally, MP is a loooot lower than HP, like a 1:10 ratio. This 999 HP 999 MP thing doesn't make sense.

lol having them as 6 year olds is pretty far fetched but this is just an adaptiom of the novel right? so not much the artist can do about that. I always thought that when youre in those kinds of reborn situations that your mind and whatever experience is influenced by the body youre in like she's seeing evrything through eyes of a 6 year old. Like, you arent entirely yourself from your past life, you've started anew, your a new person, so I wouldnt think falling in love with someone the same age as the reborn you would be too strange...if that makes sense...welp not like thats really conveyed well in the manga though, just something that I thought about.
For your second thought it's probably just an uninformed miss made by the novel author, or maybe their game logistics just work that way¯_(ツ)_/¯

I am totally agree with you with how the male lead is way too mature for his age. Though, I think it would be really sad to be this mature at his age cause logically speaking, he must have been experienced lots of shits to turn out like this (or he is just way too smart for his own good and I believe it is the latter)

Since it’s a love game I think the MP/HP ratio is somewhat reasonable. You’d have basically 0 use for HP cause what’s gonna damage you in an academy where you need to make love interests fall for you?(probably just the mini games) But MP might be useful for love potions or whatnot but who knows ╮( ̄▽ ̄)╭

I get a surprise being a surprise. But if he had this surprise all planned, or whatever, why'd he tell Woori to stay out and play with his friends even after midnight? Like, was he planning to just go pick him up or sth? I mean I guess that's what happened, but I'm still confused. Like dude, ya coulda just kept him home... or taken him out or something... ┑( ̄Д  ̄)┍
cliffhangerrrrr noooooo i literally binged this whole series today this isn't fairrrrr
Also here's hoping Soojung Doh stays away for good... because Mr. Hwang deserves better than some chick who didn't even care about ruining her ex-boyfriend's life till it all came back to bite her in the ass.