Operation: Corrupting the Saintess
Haa. After finishing an early dinner, I finally returned to headquarters and slipped into my personal quarters in the dormitory. I sat on the edge of the bed, toweling my damp hair, and caught my reflection in the mirror across the room. Skin like fresh snow still glistening with moisture, full breasts, silver hair that sparkled even brighter than before, and eyes that flashed jade-green whenever excitement stirred. I had strolled through the wide lobby, wandered the corridors, and escorted Luna all the way to the cathedral without a single person suspecting my true identity. The infiltration seemed flawless.
I glanced down at the smartphone in my hand. This wasn’t some mission-issued device or special encrypted terminal—just my personal phone, no different from any civilian’s. I wanted to contact Master and report my success, but I couldn’t. It would reveal his location, and there was always the risk of eavesdropping. All I could do was wait. Master had said he would find a communication method that couldn’t be traced. Until his next order arrived, I would continue playing the role of Isabelle Kang—the woman who hated masks and Saintesses.
I tossed the phone onto the bed and was drying my hair in front of the full-length mirror when the lock on my door suddenly disengaged with a soft whirr. Three female agents in suits stepped inside. I flicked my eyes across the scene. The two behind the leader were fully armed.
“What is this about?”
“Our apologies. We’ve discovered a matter that requires immediate confirmation from you, Agent.”
I quickly wrapped the towel that had been draped over the chair around my chest and groin. As I swept my still-messy hair back, I glared at the agent wearing sunglasses. The armed agents behind her wheeled in a man in a lab coat along with a table loaded with equipment.
“We are truly sorry for intruding on your personal time, Agent Isabelle. However, you have a scheduled meeting with the branch director tomorrow, so this verification is mandatory. We ask for your full cooperation.”
In the span of seconds, a lie detector and various devices were set up inside my private room. Following the gesture of the sunglass-wearing agent flipping through documents, I sat down in the chair.
Had they caught me? I thought my behavior had been flawless. Was something off in the test results…?
“This won’t take long. There’s only one question.”
“I’m curious what kind of important question requires dragging a male researcher into a lady’s room right after she’s bathed.”
The researcher averted his eyes with an awkward cough. I had deliberately laced my voice with intimidation to suppress them, but it had little effect on the other agents. The two who approached me attached the lie detector pads and EEG sensors to my wrist, forehead, and neck, then immediately trained their guns on me.
“Preparation complete.”
“Very well. Agent Isabelle Kang, I will now begin the questioning.”
At the sound of the man typing on his keyboard, the devices attached to me hummed to life. A lie detector—true to its name, it read heart rate, body temperature, and other biometrics to detect falsehoods. Every word I spoke from now on would be scrutinized for truth or lies.
I steadied my breathing, slow and quiet. A case clicked open in front of me. Inside were my tools from the Korean mission: expandable baton, handgun, magazines, and terminal.
“These are the items you used during your assignment in Korea. Correct?”
“Correct. What of it?”
Documents were tossed in front of me. Unfamiliar paper, yet the content was all too familiar—the falsified report I had written on Master’s orders two days before returning.
“We discovered discharge residue on your handgun. One round is also missing from the magazine. Your own report states there was no combat. Would you care to explain why your firearm shows signs of having been fired? To be direct, I suspect you may have undergone Saintess conversion.”
“......”
The handgun and the magazine missing one bullet. The round I had used during the battle against the anomaly-created doll and Noa, the two-person team. I stared at the agent who was openly pressuring me and answered.
“I tried to commit suicide after completing the mission.”
“...Pardon?”
“Exactly what I said. After the mission ended, I put that gun to my head and pulled the trigger. It failed.”
The private room fell deathly silent. Only the quiet hum of the lie detector filled the air. Then came a clear notification tone. The researcher swallowed hard, adjusted his glasses, and broke the silence.
DETECTION RESULT: TRUTH
“...Agent, is that… true…?”
“Is that answer not sufficient?”
The cold professionalism they had shown when entering the room had vanished. All of them stood frozen with stunned expressions. I rose from my seat and removed the sensors myself since the agents remained motionless. How had I done it? Simple—the words I had spoken were the truth. The human Isabelle had truly wanted to die once everything was over. The human Isabelle Kang had pressed that very gun to her own head and pulled the trigger.
Back when I was still human, it had been my chance to avenge the father who had loved me so much, in his homeland. After seizing that long-sought opportunity with my own hands and paying for my sins, I had planned to end my life. Even after meeting Master by unexpected fortune and receiving salvation from him, that resolve had not changed. The plan had shifted to hiding Master’s existence by sacrificing myself, but the core remained the same. The target of my devotion had simply changed from longing and guilt toward my adoptive father to loyalty toward the being who had become like a god to me. The heart of Isabelle—who had wanted to escape everything through death, repay her debts, and finally find peace—was not a lie. What I told them was not falsehood, but the genuine truth and sincerity that had belonged to human Isabelle. The true heart of the newly born Saintess Isabelle remained hidden beneath, spoken calmly and proudly.
No matter how advanced their technology, it could never distinguish the lie concealed beneath two layers of truth.
“Um, Agent Isabelle. If you experienced any difficulties during the mission—”
“I would like you to leave immediately. Oh, and don’t worry—I won’t attempt suicide even if left alone.”
“...Please excuse us.”
I raised a hand in farewell to the agent who offered an awkward evening greeting, his face clouded with complicated emotions. It took less than thirty seconds for the equipment and five people to clear out of my private room. An unscheduled inspection of reports and equipment before the branch director meeting—perfectly standard procedure. The plan Noa and I had prepared, anticipating every possible scenario until the moment we parted, had proven its worth. I was fine, but I couldn’t help worrying whether Noa was managing well. Still, I would trust in her cunning.
That being the case, what I needed to do now was…
“Nothing at all…”
My mission to act human until Master contacted me was proceeding smoothly. Without drawing any particular attention, I simply needed to wait for tomorrow’s meeting with the branch director as ordered by the upper brass. I sighed, tossed aside the towel that had covered my body, and slipped into underwear. I poured the coffee I had prepared earlier into a mug, sat at the desk, and opened my laptop to check the schedule.
“Just how long do they plan to keep me on standby…”
Aside from tomorrow’s meeting, the entire week was marked as standby orders. The following week was listed as ‘TBD.’ I could ask the branch director for details tomorrow, but that new agent… just who was she? Even in an organization that always suffered from personnel shortages, they had never deployed a rookie to active duty. And to issue an emergency recall for an agent stationed abroad, only to place her on standby due to her escort’s personal circumstances? In all my years, having completed over thirty missions with various agents, this was a first.
I tapped the mouse absently with my finger, rested my chin on my hand, and sank into thought.
“I’ll have to ask the branch director for the details.”
Ding— The notification sound pulled me out of my thoughts about how to maintain the façade of normalcy. A message had appeared in the bottom right of the laptop screen. It was from Luna, whom I had parted with earlier in front of the cathedral.
“.....”
I quietly typed a reply and sent it.
.........
A good idea had come to me. If the standby period had grown longer, I could invest that time in Luna. I would turn Luna—the woman humans called a Saintess—into Master’s own Saintess… into his slave. Surely, surely that would make my Master happy. Would he praise me and tell me I did well…?
“...Slurp…♡”
My body was beginning to heat up. But I had no way to turn Luna into a Saintess. I didn’t possess Master’s mask. And even if I did, there was no way to place it on Luna while she was inside the heavily guarded cathedral. So how could I make Luna into Master’s slave?
By corrupting her very soul.
I would corrupt her so thoroughly that the moment Master offered her the mask, she would reach climax from the joy of becoming his Saintess and put it on herself. “…This is my first time attempting it, but…”
I drank the coffee in my cup, savoring the warmth sliding down my throat, then leaned back comfortably. I relaxed the focus in my eyes and blurred my consciousness. Before I knew it, the body that had been sitting was now standing.
“…Success.”
Astral projection. A clone. The mysterious power that had dwelled within me ever since I read the characters inscribed on the mask as a child. The mask inside the coffin had taught me the precise way to use the power I had once thought a curse. The power to defile a human soul and twist it however I wished. This was not a curse—it was a blessing.
I moved the incorporeal clone body and passed straight through the door of my quarters. I walked down the long corridor, passing the agents standing guard. As expected, the humans couldn’t even perceive me in this state. I continued past them down the hallway.
On the third floor of the dormitory, after climbing the stairs, a noticeably different and far more spacious area appeared. Although they were no longer human, the agents who had harmed Master and the Saintesses still carried heavy burdens in their hearts. To ease that weight, every branch maintained a religious facility. This was the cathedral inside the British branch dormitory. A massive cross stood in the center, and a sacred atmosphere permeated the space. I crossed through the middle where everyone bowed their heads and looked around.
“…There she is.”
“........”
The beautiful Saintess with her eyes gently closed and hands clasped together. I approached my sister Luna and stroked her head with a translucent, incorporeal hand.
“Poor Luna… You’ve only ever lost the faith you gave and never received anything in return… You don’t have to be sad anymore, Luna. The new god I believe in—the one you will come to believe in—will answer your faith…”
The hand that had been gently caressing Luna’s head pushed straight into her body.
“──Ugh?!”
Luna’s body shuddered violently as she let out a high-pitched moan. The unusual sound drew the eyes of everyone inside the cathedral.
“…Sister Kang? What’s wrong? Are you all right?”
The agent seated behind her whispered quietly so as not to disturb the prayer and checked on Luna’s condition, but—
“…Yes, I’m sorry…! I was startled by a strange sensation…”
“Haha, it’s quite all right. It’s getting late, so I’ll be heading back now.”
“Yes, thank you for your hard work!”
Luna gave a bright smile to the agent who was worrying about her as he moved away.
“…Hehe…♡”
A smile similar to my own. Luna, who had always been far removed from desire, licked her lips with a smile tainted by corruption. Wearing an expression she would never have made before, she unclasped her hands and rose from her seat.
“…Sister Kang? Are you finished with your prayers already?”
“…Yes, something I need to do just occurred to me.”
She smiled at the kind-faced nun, excused herself, and left the cathedral.
Ah, was that too out of character for Luna? I had tried to speak and move according to her memories. What did that mean?
…Because right now, it was I who was moving Luna’s body.
Possession.
The precise application of my power that I had realized upon awakening as Master’s Saintess. I could penetrate directly into a human soul and dye both their way of thinking and their very soul with my own color. This was my own method of corrupting Luna without needing Master’s mask.
“….♡”
I walked quickly down the corridor, entered the dormitory where the nuns stayed, and slipped into a private room. I stripped off the stifling nun’s habit and stood in front of the full-length mirror in nothing but underwear. The abundant breasts that even modest undergarments couldn’t fully contain, the narrow waist, and the wide hips that didn’t match. I ran my hands over my entire body, savoring the softness of this form that was even smoother than my own, then removed the underwear.
“What a vulgar body you have, Luna. Such a body… it would be a waste to offer it to God.”
I pulled over a chair and sat down, spreading my legs. Pink folds came into view. A clean, pure pussy. A pitiful pussy that knew nothing of sex. When I lightly stroked the slit with my fingers, her body jolted upward with a shiver of pleasure.
“Eut♡?! It seems even more sensitive than mine… Have you never even masturbated, Luna?”
Even after searching her memories, I couldn’t find any recollection of Luna touching herself. She had touched her clitoris out of curiosity once, but the unknown sensation and sense of sin had made her stop… What a waste, to have a body like this. Then again, it was exactly like the clumsy, scatterbrained Luna.
“It’s all right, Luna…♡ Leave everything to me. There’s nothing to be afraid of… The god you serve may hate impurity, but the one we will serve is a gentle being who will embrace even a dirty girl like you…”
I soothed Luna’s soul where it slept inside, then lowered my fingers with a heated breath. My hand, trembling slightly from tension, brushed past her clitoris, settled on the quivering entrance, and—
“…Mmm…”
I carefully applied pressure with my finger.