We met when Yeo-ju was 20 years old and we couldn't even date until late.
But even after Subin turned 20, Yeoju continued to treat her like a baby.
This is the situation.
“Sister.. We’ve been together for 4 years, why do we only kiss?”

"Huh? Subin can't do anything but kisses because she's still a baby."
“I’m not a baby!!!! I’m not a baby!”
“If you’re not a baby, then what are you?”
“I’m a man….”

“Oh my~ Really? Yeah~ You’re a man~”
"…it's annoying…."
“It’s okay, baby~”
“Huh! I’m going out for a drink with a friend!”
“Okay~ Have a nice day~”
“Is it okay if there’s a girl?”
“Yeah, it’s okay since there are guys too.”
“Am I really going?”
“Yeah~ Have fun~”
Soobin drank like that until 11 o'clock.
And then I got a call from the female protagonist.
"hello?"
"hello?"
“Here… please take Subin with you…”
“Ah. Where are you?”
“Please come to 00 pocha.”
"Okay, I'll go now."
The female protagonist arrived after 20 minutes.
“Hello~ This is Soobin. I’m going to go now!”
“Oh, yes! Come in~”
The female protagonist walked with Subin.
“…Yeonju noona?”
“Huh? You’re awake? Can I go now, Unnie?”
“..No..Take me..”
“Okay. But Subin, why did you drink so much?”
“Sister.. do you hate me? I think you hate me
“I drank a lot of alcohol….”
“Huh? What are you talking about?”
“No.. I dress up and go out to look good to my older sister.
But... my older sister doesn't know and teases me more... … .”

“No… Subin… I like you, Sister Subin.”
“Oh… Then don’t tease me anymore, unnie… Got it?”
“Okay.. Okay.. Subin, let’s sleep over at your house tonight.”
As we walked and talked, we arrived at the female lead's house before we knew it.
“Ugh… Sister… I’m tired..”
“Go quickly and lie down.”
The female protagonist kissed Soobin on the cheek.
side
“I love you, Subin.”
"me too…"
The female protagonist who promised not to tease her after that
There were fewer pranks than before and Subin started to play pranks.
“Sister.”
"uh?"
“When are we getting married?”

/////////
“Hey, don’t joke around.”
“Seriously, isn’t it time we got married?”
“Mr. Lee.. Don’t tease me..”
When Yeo-ju started to cry, Soo-bin hugged her and kissed her.
side
“Anyway, let’s get married soon.”
