Conquering the Flower Garden
Kishi's lair, the one who wields threads, was the greenhouse called the Flower Garden, smack in the center of the academy grounds. I had no idea why such a massive garden was planted in one corner of the school. Probably some game-like contrivance. The Flower Garden used to be for outdoor special activities, but ever since Kishi founded the Flower Appreciation Club, it's only been used as their clubroom. It felt off that a club with just six members had a whole building to themselves, but considering Kishi's ability to control people with her threads, it was obvious how she'd gotten permission.
The club's members were all women except for one. And even that lone guy was pretty much a chick with a dick attached. Short stature, narrow shoulders, slim waist, big ass. On top of that, every single member was not just beautiful but drop-dead gorgeous—guys included. Kishi had handpicked only the cutest, most lovable students in the academy. In other words, the Flower Appreciation Club was a curated collection of the school's prettiest faces. If Zuri had been a regular student instead of the violence demon Cheolgang in her original form, she would've been the seventh member, brainwashed in Kishi's Brainwashing Chamber like the others, filled with blind adoration.
But that Kishi was now under my thumb.
"Welcome, club president... sir...?"
Inside the Flower Appreciation Club's clubroom at the back of the Flower Garden. As I pushed open the door, a female member came out to greet me. But her face froze in shock moments later. And who could blame her? The club president she revered more than anyone in the world—thanks to Kishi's Brainwashing Chamber—was on all fours, buck naked, with some fat slob riding on her back.
"Everyone♥ I've got some great news♥"

Kishi flashed a beaming smile as she spoke. It was a sweet, bubbly grin utterly unlike her usual haughty, authoritative vibe.
"From now on, our club will be managed by Yaruo here. And on Yaruo's suggestion, we're changing the club's name from Flower Appreciation Club to Sex Play Club."
"Wh-what are you talking about, President?! Why would you submit to a pig like—?!"
A pink-haired girl blurted out in panic. Despite being on academy grounds, she wasn't in uniform but some frilly dress more suited for a doll—straight out of Kishi's tastes, no doubt.
"What did you just say?"
Kishi's expression turned icy in an instant as she glared at the girl.
"I-I..."
The girl froze like a deer in headlights, terrified.
"Apologize. Now."
At Kishi's command, the girl dropped to her knees, clasped her hands neatly on the floor, and bowed her head repeatedly.
"I'm sorry! That was a slip of the tongue!"
Thud, thud. She slammed her forehead against the floor with brutal force. The other members paled in fear.
"I, Kishi, will never tolerate any insult or slander against Yaruo. You should all be thrilled that someone as great as Yaruo has agreed to manage our club. Now, everyone—applaud."
At Kishi's order, the members burst into applause. Even the pink-haired girl whose forehead was now beet red from bashing it on the floor. Their faces were a mix of bewilderment and shock. One girl's complexion turned ashen, realizing her body was moving on its own.
Kishi's Brainwashing Chamber was insidious. The members had no idea they'd been brainwashed into joining and now idolized Kishi. That was its strength—and its true horror. If Soul Capture radically transformed its targets, the Brainwashing Chamber seeped in naturally, subtly shifting their colors.
"Look at 'em clapping with those dumbass faces," Zuri snickered from behind me, where she was acting as bodyguard.
"Kishi, that's enough. Make 'em comfortable now."
I hopped off Kishi's back and said.
"Not gonna play with 'em more? Understood, Yaruo."
Kishi stood up and gestured into the air.
"Eek♥"
"Ahhn♥"
The members let out sticky moans, eyes rolling back as their heads jerked. The aftermath of their brains being tampered with by the implanted Brainwashing Chamber.
"Now, you no longer need to be beautiful or cute. Twist yourselves into something lewd and vulgar to suit Yaruo's tastes. Become pathetic bitches clinging desperately, craving affection."
For the record, I hadn't specified how to change them. Probably Kishi's idea of what I'd like.
Like an orchestra conductor, Kishi moved her hands precisely through the air. In perfect sync, the bitches writhed their hips, tossed their heads, and moaned in chorus. Then, just as suddenly, they went still.
"All done, Yaruo."
Kishi turned, bowing her head. Sure enough, the members now gazed at me with reverence and love that hadn't been there before. Their faces were a mess of tears and snot from the brain-tampering, but they wore blissfully happy smiles regardless.
"As Kishi said, I'm taking over this club from now on. Obey my orders. Got it?"
I cleared my throat and declared. They responded with far more submissive tones.
"Yes, Yaruo♥"
With that, Kishi's territory was mine.
With Kishi in hand, my plan to build an army against the exorcists' raids gained serious momentum. Her Brainwashing Chamber not only covered the weakness of Soul Capture's inefficiency against groups but upgraded it further. Use Soul Capture for the initial transformation, then repeatedly amp up loyalty and strength with the Brainwashing Chamber. Since Soul Capture could also enhance targets, combining it with the Brainwashing Chamber yielded devastating results.
I tested it by having Zuri spar— she held her own decently, even if not evenly. Considering her base was Cheolgang, one of the story's top powerhouses in raw strength, it was a solid outcome. If Yaruo and Kishi had teamed up early in the original, the exorcist arc might've ended in a player loss without my intervention. But given their clashing personalities and mutual urge to kill each other, that was never happening.
"Ahhnnehehehe♥"
Late afternoon after classes, at the construction site. I'd had Kishi apply secondary Brainwashing Chamber enhancements to the former biker gang—now Yaruo's personal guard—and the pint-sized big-tits beauty squad.
"Haha♥ Check out those weird faces. Pissing themselves while cumming lol?"
Zuri giggled, watching her former underlings and comrades drool and piss with slack-jawed bliss from the Brainwashing Chamber.
"You're not exactly in a position to talk."
"Huh?"
Zuri tilted her head at my words.
"You need it too. Upgrade time."
Her mocking grin vanished, face paling in horror.
"M-me too? Zuri's strong enough as is!"
She clung to my arm, mashing her tits together in a spoiled pout.
"Aww, Yaruo bro. Zuri hates that stuff. Can't we skip it? Pleeease?"
"Kishi."
I ignored her and called Kishi. She reacted instantly, like she'd been waiting.
"Understood. Everyone, grab Zuri."
"Yes♥"
The newly upgraded beauty squad surrounded Zuri on command.
"D-don't come closer! Touch me and I'll kick your asses right now!"
Zuri snarled at her former minions, now enemies in a flash. They might've flinched before, but post-secondary brainwashing, personal threats meant nothing to them. The beauty squad closed in. Zuri put up a fight, but they pinned her down and forced her flat on the ground. Soon, sticky moans echoed.
"Stop...! Ack... N-not the ears! Ahhhnn! Eek♥ Heheek♥ Higigigik♥"
It started as screams, morphed into weird moans, then dissolved into vacant laughter.
"Heehee...♥"
The terrifying strength of Kishi's Brainwashing Chamber: it spread like a contagion from host to host. By remotely controlling an affected target to spew out the chamber from their body.
"Complete, Yaruo."
"Good work. Kishi, you've been a big help lately, so here's a reward. Zuri's yours to manage from now on. Play with her however you want—as long as you don't break her."
"Really? Thank you, Master!"
Kishi bowed deeply, ecstatic. She turned to Zuri and beckoned.
"Zuri, come here."
Zuri, sprawled in a puddle of piss giggling dumbly, snapped to attention and toddled over. She flung herself into Kishi's arms.
"Kishi sis♥"
The brat who'd never used polite speech on anyone but Yaruo—even after turning girl—nuzzled Kishi's tits with a dopey grin, acting all cutesy.
"I'll be in charge of your training from now on."
"Yay~! For real? Thanks, Yaruo! Zuri's always dreamed of being held by Kishi sis."
Zuri beamed innocently, completely forgetting she'd once been the manliest of men. Or her bratty mesugaki schtick.
"Come to the Flower Garden first thing after school every day. I'll teach you all about coordis and makeup until you're as lovable as your cute looks deserve."
"Yes♥ Sis♥ Teach Zuri till she becomes an amazing woman like Kishi sis♥"

Zuri gazed up at Kishi with eyes dripping honey. Her pussy was drooling too.
"Heehee...♥ Kishi sis...♥"
With that, I'd claimed two of the Four Heavenly Kings of Brutality. Just one left: Jinma.