After being banned 20 years ago, Program 68 is back, this time under the direction of a sinister government artificial intelligence. The troubled and misbehaving kids of Daitoa Academy's Class F have been chosen, divided into squads, given weapons, and commanded to fight to the death. Now friendships and loyalties will be tested, and only the strongest will survive.

At the age of 6, she lost her father and mother and became the Empress of the Holy Empire.However, the truth is she's only a puppet used by her uncle.A miserable life that will eventually end up by being murdered as a witch."If you close your eyes and open them again, everything will never happen. Go back to the past and find your mom!"But at the last minute, I did a miracle."Ah""huh?"She got a single chance to save everyone she loved.* * *"Ha, I don't believe you. You vicious kidnapper."Dad, don't do that to my mom.'"I wouldn't believe it. You look like a cowardly abuser!"Mom, dad you can't do that...'Suddenly, mom and dad grabbed each other's collars and shouted."Get your hands off that baby, you mortal bas****!"If even one person let's go, I can't be born.'Mom and dad, you can't do that. The two of you will fall in love in the future and even deceived everyone around to get married and give birth to me.So please, both of you, don't fight over me.

I have been acquainted with my neighbor oppa, Gu Dojin, for over a decade. However, on that particular day, I was unexpectedly confronted with the sight of his bare chest, which was strikingly impressive. As a person whose ideal is a gentleman possessing an admirable chest, I, Yuju, found myself utterly perplexed. Ultimately, in a drunk state, I committed an irreversible mistake. "Dojin oppa, may I touch your chest just once?" I inquired, never anticipating the consequences of my actions. I could not have foreseen that my drunk self would behave so impulsively. "Observe this," he insisted. "..." "I said, observe this!" he reiterated. I observed, and what I saw was unmistakable. I was taken aback to discover the unsightly marks on his chest—marks that were, regrettably, inflicted by my own actions. "Do you see my swollen nipples? How could they not be swollen? You bit them with such force that when I wore a t-shirt during class, the fabric's friction caused considerable discomfort. I feared it might even bleed," he explained. "..." "Yuju, what is to be done now? This is the result." "...Dojin oppa, I apologize." "Apologize? Do you believe a mere apology suffices?" "Then you are free to..." "..." "You must experience it as well."