Is The Kiss Me Liar Novel Side Story Considered Canon Content?

On the Lunaris Festival, the palace banquet glittered with candlelight. It lasted until the Crown Prince rose and dismissed every consort of his for the sake of his first love, the woman he had never stopped idolizing. Everyone else accepted the gold coins from the prince and returned home for reunions. I had nowhere to go. I found a rope and hanged myself at the gate of the Withered Court. I had been reborn into this world and spent 21 years locked in the System's mission. It demanded that I court four designated male leads and earn absolute affection from at least one of them. I failed every route. The final path collapsed in my hands. The System offered one last mercy. If this body died, I could return home and reunite with my family. As my consciousness slipped away, I thought I heard someone scream my name, as if the world itself were breaking.

After transmigrating into a novel, I realized the heroine and I had the exact same name. Naturally, I thought I had transmigrated into the female lead. So I marched straight to the man who was still a broke nobody at the time, threw all caution to the wind, and pounced on him like I had plot armor protecting me. He even glared at me with red eyes and told me he hated me. I honestly thought he was just into the whole push-and-pull thing. Everything shattered when the real heroine showed up and I finally understood one thing. He actually hated me. Heartbroken, I packed my bags and got ready to disappear. The next second, he pinned me against the wall. "Where are you going? Already bored of me, sweetheart?"

Lyra never imagined that pretending to be her twin sister, Angela, would lead her into such a tangled mess. When she agrees to meet Angela's boyfriend, Kurtis Wellington, on a secluded island, things take a surprising turn. Kurtis mistakes her for Angela, and instead of clearing up the confusion, Lyra finds herself falling for him. As the lie grows, so does Lyra's guilt, and her feelings for Kurtis. But when the truth is finally revealed, the fallout is explosive. Lyra is left to face the consequences of her deception, caught between her loyalty to her sister and the man she loves. Can she ever make things right, or has she lost Kurtis forever? The Wrong Twin's Kiss is a story of love, lies, and the complicated bonds between sisters, where one kiss changes everything.

Sia wanted one night, just one daring, unforgettable night with Knight Smithfield, the boy she’s quietly loved from afar. What she didn’t expect… was to kiss his twin brother instead. A masked moment and a stolen kiss that felt too right to question until a photo exploded across campus, turning her secret into scandal. Now, Sia is forced to be in a fake relationship with Richard, the wrong twin… and the only one who knows the truth. As if that wasn't complicated enough, their parents just got married, forcing all three under one roof. Living with the Smithfield twins should’ve made things clear. Love one. Hate the other. Easy, right? Except nothing feels easy when Richard starts becoming something more than a mistake, and Knight suddenly starts acting like he wants her too. One kiss changed everything. Now Sia is caught between two brothers, two hearts… and one impossible choice. Was it just a twisted accident— Or was it fate playing her hand?

Aria thought she had her life figured out… until she caught her boyfriend cheating in the middle of a crowded bar. But instead of breaking down, she does something reckless- something completely unlike her. She walks up to a stranger and kisses him in front of everyone unplanned. What she didn’t expect was for that one impulsive moment to change everything. The kiss goes viral overnight, dragging her into a spotlight she never asked for, and the “stranger” turns out to be Damon—calm, controlled, and far from ordinary. To protect their reputations, they agree to fake a relationship, turning one mistake into something much bigger than either of them planned. But pretending starts to feel real, and the line between what’s fake and what isn’t begins to blur. With her past refusing to stay buried and Damon keeping parts of himself just out of reach, Aria realizes this was never just about a kiss. It was the beginning of something she may not be ready for.

I woke up inside a novel, and not even as an important character. I became a pretty background extra in a smut novel. My brother, however, was the only normal person in the entire story. His character setting was the one man the soft, delicate heroine could never win over. He was the cold, unattainable Prince Charming she could never conquer. When the heroine cried and confessed her love, he was studying. When she offered him her whole heart and body, he was busy starting a company. When she spiraled into scandals and nightlife, he was already a billionaire, calm and untouchable. I thought he would live a quiet, ascetic life forever. Until one night, I walked in on him at midnight… holding a piece of clothing I recognized all too well, murmuring a name over and over, a name so familiar that my scalp tingled.