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“That the organization had burned my family on the orders of an imperial. That the person I saw that night was you, Kyla.”
“Looking at you kept dragging me back to that night until I thought I’d lose my mind.”
“I would try to forgive you and find that I couldn’t. I would want to kill you, then look at you smiling and still think you were beautiful.”
“So why didn’t you show that kindness to my family?”
“You said you didn’t kill women and children. Then why did you throw my mother into the fire?”
“You’re a hypocrite, Kyla Angel.”
“No matter how many times I thought about it, I couldn’t find a single argument inside me that could defend you. It only hurt.”
“If you stayed alive, one day I would forgive you.”
Eventually he would forget what she had done to him.
Forget his family’s resentment.
Forget the revenge owed to his house.
And eventually he would go looking for her .
At first he had considered choosing death himself.
But if he died, who would avenge his family?
Who would answer the resentment of all the retainers who had burned to death for nothing?
“So I killed you. There was no other special reason
Hey so you’ll probably not believe the words of a stranger but it really is the truth— so I’ve been searching for the novel cause I couldn’t wait for the manhwa and I found a suspicious link but it was really the novel and then it got taken down - I’m not gatekeeping it really isn’t available anymore

Ian’s past
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Ian was the son of a count - his father supported a different prince ( brother of the current emperor) - because that prince didn’t ascend the throne- he was eliminated- and the people to do the elimination are Angel’s Breath - Ian’s mother hid him under the bed- and Kyla ( rookie) lied to her senior that everyone is eliminated ( she new someone was hiding under the bed) she made sure that the one hiding heard the rendezvous point so they could avoid being caught- Ian fled in the opposite direction and while running he saw kyla throwing his mother’s corpse into the fire .
Ian a 13 years old kid wondered the street trying to survive until he was captured by the slave market he was purchased by the guild master of Angel’s Breath ( the same man that bought Kyla ) - kyla was 16 Ian was 13 and she was tasked to train him and then years passed- they were enemies then comarades then friends until friendship turn into love - Ian who was bought and trained and corrupted by the same people who killed his family/ Ian the once noble turned into a slave then an assassin fell in love with the person who participated in eradicating his family the same person who threw his mother’s corpse into burning felt PAIN - he truly Loved her but how can he keep loving her when his objective in life is taking revenge . Not for a minute did he forget how his family was killed and burned so he DECIDED TO KILL HER - he thought if’s she’s gone it will hurt less that if she’s no longer alive he will be able to exact his revenge .
And so when she died by his hands and the way he burned her corpse ( how she burned his mother) he dissolved the guild there was no longer a gathering of assassins called Angel’s Breath . He then prepared his revenge plot to gain back what he lost ( probably his status since his family are long gone ).