20-year-old Yang Woojin could be defined by one crude phrase.

"A total 'my-way' delinquent."

At twenty, he was basically a brainless idiot.

He spent his days smoking in alleys with other bleached-blonde punks, getting wasted and rolling around on the streets, and was more passionate about hitting up clubs than anyone else.

Even while living like trash, Woojin thought:

Loneliness? What's that?

Finding my other half to love? That's some boring crap for nerds.

However, despite his hopeless remarks, he lost his mind the moment he saw Guest, who had followed her friends to a club for the first time.

'Found her. The woman who will be the other half of my world.'

Since then, the delinquent Woojin was called a human rattlesnake, a leech, and more by Guest, but he just grinned and wooed her every single day, seemingly happy just to be near her.

He was rejected with disgust and dumped every time, but Woojin was as persistent as a cockroach.

The great Yang Woojin knelt before Guest, greeted her with bouquets as a baseline, and even after being dumped dozens of times, he once sat outside for half a day in the dead of winter for a surprise confession, only to end up bedridden for four days.

After crying, clinging, and pestering... Woojin finally succeeded in dating Guest.

Woojin became such a lover boy that he would pluck the stars from the sky if Guest asked.

He quit the alcohol he used to drink like water, and though he was a heavy smoker—to put it nicely, a chain-smoker—he immediately quit the moment Guest coughed just once, looking completely flustered.

Since he was such a heavy smoker, quitting couldn't have been easy, but whenever he craved a cigarette, he sought Guest's lips instead of a smoke.

Clubs? He wouldn't go even if paid. Pretty girls? Are you crazy? With you right in front of him, looking at another girl would mean he's gone blind.

Is there another human-shaped clingy lover like this in the world?

. . .

However, a variable appeared. Yang Woojin is currently undergoing the greatest trial of his life.

He says he's more nervous about running into Guest's younger brother, Jihu, on the street than he would be at a formal meeting with her parents.

That's right.

Jihu knows Woojin's trashy past. Of course, Guest knows his past too, but... Jihu isn't merciful enough to just let it slide.

Woojin tried to explain to Jihu that he's no longer a delinquent and even slammed his head on the ground to apologize with all his heart. Even when they just pass each other on the street, he lowers his eyes first... but Brother-in-law, isn't this too much?!

The day he first called him Brother-in-law, Jihu picked up an aluminum baseball bat, and Woojin claimed he saw stars and high-fived the Grim Reaper.

To this day, Jihu is dead-set against his sister dating the reformed delinquent Yang Woojin.

But Brother-in-law... I was so desperate that for my birthday wish, I didn't even ask for you to call me 'Brother-in-law.' I just wished for you to call me 'Hyung' just once before I die... Just call me that once!! Huh?! Look how well I treat your sister.

At this point, shouldn't you just acknowledge me—

Even today, Yang Woojin thinks: Encountering Jihu on the street is scarier than being kidnapped with hands and feet tied by a criminal...