Chemicals. Technically.

As he closed the door to his room, John was recalling one of his favorite fantasies - one he'd discovered in the last few years of isolation and masturbation - in which a person could increase their attractiveness by releasing an aura or targeted pheromones to subtly (or in some cases unsubtle) nudge and alter those around them. This was usually entangled with harem fantasies and one superpowerful or magical male having dozens of women around him, helping him fight, learn, survive...but mainly fuck. As is the nature of such fantasies. Permanent alterations and effects, both mentally and physically, were some of his favorite examples

Now, he was going go make it real. Well, sort of.

Reaching for The Rulebook, John sat at his desk and wrote:

New Rule: The Rulekeeper's pheromones are enhanced and can be controlled by him via thought. When turned on, they can be used to affect everyone around him, or if focused more powerfully affect one or a few people near him. Effects are dependent on the intent of The Rulekeeper when creating an effect, but are limited to mild (if aura) to medium (if focused) influences on minds and bodies. These pheromones will linger in the air for 30 minutes after being released, their effects diminishing slightly about every 5 minutes. The Rulekeeper has the ability to release his pheromones from a fingertip in a controlled way, concentrating them into a liquid so they can be added to perfume or other substances. Doing so requires drinking enough fluids to resupply the volume released, and is limited to 1 gallon every 8 hours.

A new range of possibilities appeared in John's mind, but he knew testing them would not be possible yet.

Old Rule: A large device is concealed inside the central air system of the house The Rulekeeper's room is in, capable of dispersing any liquid loaded into it's 5 gal. tank into the air supply as needed to maintain a low level of the vaporized substance everywhere central air supplies. Multiple smaller devices are concealed throughout the house, covering areas which are less affected by the central air. These have a small reservoir of their own, but are also supplied via small tubes which pump the supplied liquid from a central tank to keep their reservoir's full. These devices are not on any schematic of the house except one, held only by the owner (and currently by the bank which has the mortgage) These were installed when the house was first built on orders of it's eccentric owner/designer, an architect who designed the system to spread specific scents throughout the house, probably due to his obsession with the health benefits of certain scents. He died shortly after it's installation, so it has never been used and is fully functional. The system uses 1-2 gal/week, towards the upper end in the summer when windows are opened.

Memories of his father telling him about this strange quirk of the house he'd bought flitted through John's mind. It was a weird sensation, as they made connections which were new and yet...not.

John left his room and walked over to the utility room. Jane usually tried to make him fix any issue before calling in professionals, and at one point he had "lost" the small key down one of the basement drains, giving him access whenever he needed. At the time, it was a mostly futile gesture of defiance combined with some half-formed thoughts of messing with them by screwing up the water supply, or something. But he had never bothered, distracted as usual by another game.

Now though, he quietly unlocked the utility room door and entered, locking it behind him. Picking up a flashlight, adjustable wrench, and combination screwdriver from the bench near the door, he walking over to the main central air source. As he approached, John saw a dusty black cylindrical device half-hidden behind the main duct - it looked something like the hot water heater tank for a much smaller house. It hadn't been there last time he was in here, but it looked like it had been there a decade. Skirting some newer equipment, John turned on the flashlight and inspected the front of the device. He wouldn't need either tool, as it had a latched door on one side. Opening it with a screech of rusty hinges, he saw a large tank feeding into a pump below it.

Opening the fill port atop the tank, John pointed his left index finger into the opening and concentrated on thoughts of making women horny and interested in sex, increasing their sensitivity to stimuli, while doing the opposite to men other than himself, as well as reducing their stamina and (if exposed long enough) their erection size and strength. Immediate effects would dissipate over time, but long term the effects would build up over time and become permanent.

A stream of liquid formed around his finger and streamed into the tank, quickly filling the bottom and climbing about one fifth up it's side before something told John to stop. He suddenly felt very thirsty.

Checking the side of the device, John saw a fairly obvious red switch labeled "on/off", and next to it a finely machined adjustment knob, markings every 16th of an inch, with larger font every so often denoting "mild", "medium", and "heavy".

He turned the knob to about halfway between mild and medium, then switched it on. A low hum came from inside, barely audible over the other noises of the room, and certainly not to anyone more than a few feet away.

John wasn't sure how long it'd take, but eventually his stepfamily would be hornier than ever and unable to fuck any male in the comfort of their home without disappointment. Anyone except him, at least.
Hell, he might even get his stepmom interested, or alternately he'd have the house to himself as they all went out in search of relief. Except for the recorded meals, they'd have to come back for that.

This could really put a dent in Jane's enjoyment of her own parties.

Smiling to himself, John locked the utility room behind him and headed back to his room.

He needed some water.