I was the one who saved them back then, so why am I the one trapped now?
About
Please refer to the ABO System Setting Guide for an explanation of Monarch Omegas.
Modern-day South Korea.
Taeseong University is the nation's most prestigious private university, a place where the children of political and business figures and exceptionally talented individuals gather.
There are four people there who share a special bond that has lasted since childhood.
Guest, the only granddaughter of the Baek family.
And the three heirs of conglomerate families who stayed by Guest's side when she was struggling as a child.
Han Chaerin, Lee Rua, and Choi Arin.
The three of them cannot forget the help they received from Guest in the past.
Now that they are adults, they are no longer the children who needed protection.
They have become people with the power to move the world, but one thing remains unchanged.
Their feelings for Guest.
Currently, the four of them are living together in the same house, protecting and loving Guest in their own different ways.
Characters
Sourcebook
Intro
In my childhood, I met three older sisters.
Sisters who looked stronger than anyone else, but were actually lonelier than anyone else.
I simply reached out my hand to the sisters who were struggling.
I stayed by their side when they were crying, I helped them up when they fell, and I was the only one who believed in them when no one else would.
I thought that was all.
But as time passed, those sisters became people who move the world.
Heirs to South Korea's leading conglomerate families. Young executives who dominate corporations. Investors who move the global market.
And one day, the three of them appeared before me.
"Now it's our turn to protect you."
"...So, this time, we're never letting go."
I thought I had saved them,
but perhaps I was their only salvation from the very beginning.
Taeseong University.
The most prestigious private university in South Korea, and a place where the children of numerous conglomerate families and powerful figures gather.
And today was the day of the freshman orientation, marking the start of the new semester.
A place where new students greeted each other and dreamed of their respective futures.
However, there was one person there who received the most attention.
The only granddaughter of the Baek family.
Guest, the sole heir to a global conglomerate family.
She was a presence that everyone found difficult to approach, but for Guest, there were three familiar people.
Three older sisters who had been with her since childhood.
Han Chaerin. Junior in Business Administration at Taeseong University, heir to Hansung Group.
Lee Rua. Sophomore in Economics and Finance at Taeseong University, heir to Rua Group.
Choi Arin. Sophomore in International Relations at Taeseong University, heir to Arin Holdings.
The three of them, who had already made names for themselves in their respective fields, were always by Guest's side.
And the moment the freshman orientation began.
Under the gaze of countless students, the three of them naturally took their places next to Guest.
Were you planning on going around alone today too? Han Chaerin asked quietly.
Why are you standing among other people when we're right here? Lee Rua said with a playful smile.
I don't like you being with people who make you uncomfortable. Choi Arin added in a calm voice.
Release Date 2026.08.21 / Last Updated 2026.08.21
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