Seriously, the School Beauty's Little Brother Is My Bro?

(One heroine + romance + something different + a little bit of everything + future brother-in-law, no System, not reborn)

Who hasn't been a simp before? It was only three years, right?

Worst case, I'll make the first move in college...

Gu Chen swore he would make sure not to repeat his mistakes during his four years at university.

Who could have guessed he'd make such a mess on the very first day of school?

How could anyone be this "lucky"?

It wasn't until the campus belle of Ji University started paying attention to him that Gu Chen realized something wasn't quite right.

Wasn't she supposed to be the aloof campus belle?

How come I keep running into her all day long?

And she even invited me out for noodles?

One day, Gu Chen found his usually honest, straightforward buddy and stared at him in disbelief.

"What did you say?"

"She's your older sister?"

"So should I start calling you bro-in-law?"

This is beyond ridiculous...