Authornim I also wants to suggest a story based on Love traingle

Genre : angst with happy ending

where Irene had to marry seulgi but she doesn't love seulgi at first because she loves his step brother suho and suho love Irene too but he is reckless guy who ran away on the day of wedding because he accidentally made a girl pregnant and he found out a day before his marriage with Irene so when suho ran away the parents forced seulgi to marry Irene

no one knows why suho ran away not even his family members

Irene was unaware that seulgi had crush on her since childhood because bae and seulgi family are neighbours but noticing that Irene Love her brother seulgi never told her feelings to Irene and moved to New place to move on but after years she visited her family because of his brother's wedding, seulgi become more smart and cool rather than when she was as a child and Irene was amazed to see seulgi much mature

Irene got know that seulgi is better than suho in many terms when she become her wife because even seulgi was hurt seeing Irene crying for suho, she still always take care of Irene and gradually Irene fall in love with seulgi much deeper than what she felt with suho, she fall for seulgi deeper when she accidentally read the letters seulgi wrote for Irene years ago when she wanted to confess her feelings to Irene and seeing that Irene promised to herself that she'll never leave seulgi because no one can live her like seulgi does ummm unaware of Irene's feeling seulgi decided to find her brother because she still think Irene miss her brother and suho was still in love with Irene but Irene moved on from him

Twist is that Seulgi decided to divorce Irene on their anniversary thinking that only than Irene can be free from this forced marriage seulgi didn't knew Irene was crazily in love with her like "seulgi fell first but Irene fell harder"

Seulgi brought his brother suho on the day of their wedding anniversary thinking Irene will be happy seeing him but Irene feel nothing for him but scared to loose seulgi.

Still Irene talk with suho calmly saying she won't divorce Seulgi because she in love with seulgi now they got the closer they need and than Irene ran to find seulgi who was devastated drinking in a bar where the call girls trying to persue her bear which made Irene angry and she shouted separating them and brought seulgi to house

In the morning seulgi thought she was alone but got surprised seeing Irene sleeping beside her .
flashback is when they reach at home they had major fight where seulgi confessed her feelings for the first time and they ended up doing it and rest is happy ending you can write

That's it😄

Designer seulgi and CEO irene
Someone in hurry so without looking she push irene and irene throw her coffee to seulgi who just walk into the Café, without saying sorry irene just walk away while cursing but seulgi didn't let it go she just walk and yell at irene, irene try to find seulgi and knowing seulgi work at her friend company but that company it gonna close soon because of some problems and irene being irene she let her friend help her to make seulgi come to work at her company and she start make seulgi life become a mess 👀

Ummm How a about royal story?
seulgi suppose to get married with irene brother but irene brother died because of war so irene will be the next Queen and seulgi need to get married with irene 👀