My Brother's Best Mistake: Off Limits✔

Falling for your brother's best friend? Big mistake.
Kissing him in your bedroom, thinking you're home alone? Even bigger mistake.
Getting caught mid-kiss by your overprotective brother? The biggest mistake of all.

Nishimura Sana has spent years hiding her feelings for Lee Heeseung-the best friend of her older brother, Riki. No one knows, except for her best friend, Nabi, who has spent an unhealthy amount of time internally screaming over Sana's massive, hopeless crush. To everyone else, Sana is just the quiet, shy little sister who keeps to herself. But behind closed doors, she's spent years secretly memorizing every little thing about Heeseung-his stupidly attractive smirk, the way he always ruffles her hair when he visits, the fact that he'll never see her the way she sees him.

Or so she thought.

One stolen moment changes everything.

It was supposed to be harmless. Just one kiss. Just a second to let herself believe that he might feel the same. But what started as a soft, hesitant kiss quickly turned into something more-something deeper, something undeniable. And just when Sana thought she could have this one moment with him-

Her brother walked in.

Now, Heeseung is on Riki's hit list, Sana is desperately trying to fix the damage, and Nabi is just sitting back with popcorn, watching the drama unfold.

But the real problem? The kiss wasn't just a mistake. It was a confession. A confession Heeseung wasn't supposed to hear. A confession Riki definitely wasn't supposed to witness.

Now, the lines between right and wrong, friendship and love, past and present start to blur. And for the first time, Sana realizes that maybe, just maybe-

Some mistakes are worth making.