
I read a bit of the novel, and the manhwa changed the motive and the ML a bit. They made him more sympathetic and self-reflective. If you hate the ML in the manhwa, you will hate him even MORE in the novel.

It's been awhile since I read the novel, but if I recall, he basically waited half a year before he finally advertised that she went missing. He was still all about pride and reputation that he hesitated on broadcasting she was missing. And unlike the manhwa, in the novel, he knows she was on her way to leave him. She was scheduled to go the quiet countryside and he was going to let her go, but midway, she goes missing.
He thought he could secretly cover up her disappearance and find her with his own power but then 6 months go by before he finally realizes he can't depend on his own power to find her, so puts up a bounty to find Millie.

Guilt trip, gaslight, stalking. When he finds her, Millie was holding hands with a man and pretending to be pregnant. He has an absolute panic attack when he thought Millie got with another man. However, millie was only pretending to be a couple bc it would give her a discount on a store she wanted to buy. Later, he finds the guy he thought was millies new beau kissing another woman, so he beats the absolute crap out of him.
Then afterwards, he wouldn't stop bugging her, and almost even debates ruining her Cafe so that she would have no choice but to come back to him. At one point, millie is harassed by some men, and he's thinking to let her get roughed up a bit and then go save her so she'd feel grateful to him.
Oh, I also forgot to mention that he purposely gets run over by a carriage and almost dies from it bc he thought if he got injured, millie will hear about it and come running to nurse him back to health. It's when she doesn't appear even after he almost dies, that he FINALLY accepts that maybe millie is dead.

If anyone is curious, chapter 14 of the manhwa is tied to Chapter 2 of the novel. So everyone judging Tristan and going on about how he isn't empathic or falling head over heals over Eden, need to realize we're only on chapter 2 of the novel. You really expect a s straight man to turn gay in 2 chapters?

Vol 1 can be bought on Amazon. Chapter 14 of the manhwa ends exactly at the end of Vol 1.
Vol 1 is translated by worldexcerpt. You can continue reading the translation at:
https://wordexcerpt.com/series/kiss-me-if-you-can/
Volume 2, where Chapter 14 ends, starts at Ch 26. So far, Worldexcerpt does the best translation for KMIYC. All the other ones I've found, it is obvious it is google translated.
Once you've finished and get caught up and read up to ch 58, I recommend novelight:
https://novelight.net/book/kiss-me-if-you-can
Wordexcerpt ch 58 ends at 3 vol 4. So start 3 vol 5 on novelight.
Both wordexcerpt and novelight require money. If you want a free, but okay to bad translation go Blsnack:
https://blsnacks.wordpress.com/kiss-me-if-you-can/
Again, ch 14 ends at vol 1. So start at Vol 2.

The author is amazing. They're so good at making you change your impression and idea about a character. I started off absolutely hating Grayson bc of what he did to Chase in KMIYC. I still loathed him at the beginning of Desire Me If You Can, and to be frank, I actually disliked Dane as well. With their personalities, I thought they'd never get along, much less work as a romantic pair. And if they did, it'd be toxic as fuck. But to my surprise, they are a really, really good couple. And shockingly....they are super green flags to each other. It's crazy how the author made it work.
If you finished KMIYC novel, I recommend reading DMIYC as well. If anything, you see more about the Miller family and their dynamics. Josh shows up for a significant part of the novel too.

What I love about this story is that Josh, despite being the omega, HE is the knight in shining armor to Chase. Chase actually is the damsel in distress. TWICE, Josh saves him. After the first time Josh saved him, Chase completely falls head over heels for Josh. Chase is the type to wake up, feeling Josh's side of the bed is empty, and immediately wakes up to go look for Josh. He goes looking for him like a lost puppy.
Chase goes from rebellious and insane to being very docile and obedient to Josh.
It's also very obvious Josh is the one that wears the pants in the relationship. At one point, when Chase punches Josh bc he thought Josh was cheating on him, Josh pins Chase to the bed, kisses the hell out of Chase until Chase calms down. He gets Chase to talk, and they clear up the misunderstanding. The person Chase saw Josh hug and talk affectionately with? His sister. Afterwards, Josh tells Chase if Chase ever misunderstands him again like this, Josh will punch him once and then completely disappear from his life. Due to this, after Chase finds out Josh is an omega and has a child, Chase is afraid to ask or say anything bc what if it's another misunderstanding? What if he accidentally says something and Josh takes it the wrong way and thinks Chase is accusing him of infidelity? Josh said he'd leave him. So Chase clamps up and ignores the obvious signs of Josh being an omega who already gave birth.

Oh to add on. You know how Chase is Josh's first love bc Chase was in a chocolate commercial dressed up as a girl? The new movie Chase is making, his character dresses up as a woman in one scene. Josh sees Chase dressed as a woman and is completely enamored (and so is every other male on set). Chase actually was embarrassed to have Josh see him, and didn't want him there. He was about to get upset until Josh tells Chase that he was his first love bc of the commercial. Chase immediately calms down and then asks Josh since he was his first love, did Josh ever masturbate thinking of him? Haha

The changing point in their relationship is when Josh saved Chase from a pack of coyotes. Since coyotes are essential canines, Chase completely froze and wasn't able to listen to Josh's direction to hide. Chase straights up faints. When he wakes up, it's to miraculously to find himself unharmed, despite the number of coyotes. Josh didn't let one coyote pass him to get to Chase. Josh is bloody with one arm fracture(?). He was able to fend off a dozen coyotes by himself. And this is what makes Chase fall completely for Josh. Lol as a reward, Josh actually asks Chase for a kiss. Chase is taken aback but seeing as Josh saved him, not only is Chase grateful but feels guilty that he put Josh in that position. He couldn't even help bc he fainted. So he kisses Josh as a reward.
The second time Josh saves Chase, it is after the two of them are in a relationship. Chase gets kidnapped. The kidnappers want to use Chase as a stud. However, Chase refuses to cooperate, so they slap his face. When Josh drops in to rescue him, he knocks everyone out. He goes to untie Chase when he notices the swelling and bruise on Chase's face. So he asks Chase to tell him who did that to him. Chase points to one of the kidnapper that knocked unconscious on the floor. Josh walks over, grabs the back of that person's head and smashes it against the wall repeatedly. No one gets to hurt Chase and leave a mark on that beautiful face. The other ppl are like wtf and scared of how violent Josh can get, but Chase is staring at Josh with hearts in his eyes.

Yes, and then Josh became a womanizer, an omega who only slept with women...until he met Chase again.lol Him and Dane were a promiscouos duo for some time, although Dane was much worse. While Chase only slept with Josh.
Chase sometimes dresses up like a woman for Josh. And Josh desses Cecil up like a girl. Funny, with Chase's parents it's the other way round. Koi wears woman's clothes for Ashley in private... . And Grayson... spoiler
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bought a b.. for "Venus" which got him almost killed by a very angry extreme omega.lol

It's so funny how much Josh loves Chase's face, especially when he's dressed as a womN haha.
I thought I would hate Grayson, but he's so unhinged and funny in his story with Dane, that he grew on me. His story is definitely more of a romcom with all the mishaps that happen haha. I've been refreshing ridibooks nonstop waiting for ch 156.

Aside from Chase, Josh was only into women, and when he had a crush on Chase he thought he was a little girl. So it's like a fantasy coming true for Josh.lol
I think Chase wasn't happy about playing a little girl, but iicr they searched for a girl for that commercial.
Yes, I can't wait for the next chapter. That cliffhanger can drive one nuts, wating for 2 days now that he continues.-_- If there is no delay it should be released at 7 am korean time. I hope for more then one chapter, sometimes we get lucky.
Grayson became my favorite character, he is hilarious, so weird and crazy.^^ Others I know love him, too. And a lot of readers who wanted to see im suffer, fell for him. He dragged Dane along, they are like a comedic duo now.lol
But for the ones who wanted karma for him, Chase will only get closure if Grayson really understands that he hurt Chase with his way of helping and apologizes, and thanks to Dane he is learning emotions, but it's still a long way to go and I think he needs Dane for that. Since you read it you know about his problems with emotions,"helping" and some of how he was raised/how paranoid his father is, because if his own father.
The author wrote on twitter a few weeks ago, that Grayson's story was the first one she came up with when she started with omegaverse~10 years ago. So probably their characters are more fleshed out than her other characters.
Damn. If the unnie didn't freak out last minute, she would've lived.