Anon is an abyuser. Following the call of his heart, he joined as Factory worker.
Today he's having an offline gathering with online friends (all abyusers, of course) and they talk happily about their hobby, experience, new items, etc.
One thing that particularly grabbed Anon's interest is the story of a mohican haired abyuser. He told story about how he took a yukkuri back home, but the yukkuri is already dead when he arrived.
No, that's not Patchouli, he's getting a Marisa. And no, it's not vomitting, that Marisa is refreshed to death.
Interested, Anon approached that man. The mohican guy bragged about his newly modified car and also offered Anon a ride home, which of course Anon accepted.
On the way, they stopped by a park to catch a random Marisa then try to recreate the event that day.
Annoyed by the screaming, the mohican turned on his sound system. The noise is so loud Anon thought he'll gone deaf. Even the mohican's yelling at him sounds like whispers inside the car.
Then something happened. Marisa starts shivering and refreshed.
Quickly Anon told Mohican to turn off the music and interviewed Marisa. According to the yukkuri, it suddenly felt good and she got refreshed.
Starting to see the situation, Anon asked to turn on only the subwoofer that lets out infrasonic sound. His guess hits the mark because Marisa starts to feel good and refreshed again. When they arrived home, Marisa is already dead.
Three months later, the new extermination tool Anon designed is put on real world test. They warned the pet owners to bring their pets out.
The time for test is night. Pet yukkuri who goes out for walk alone should be home already and strays who scraped the trash should also be home too.
At first, the device is turned on with low capacity. At this stage, baby and koyukkuri who have thinner skin quickly refreshed until they expended their paste.
After five minutes, enough time for pet owners to evacuate their pets, the machine is turned to full capacity. The thumping sound can be felt on the ground.
The yukkuri want to escape from the extermination, but they can't. Their steps are stopped and they starts to get refreshed.
When looking around, Anon and his colleague can see inside cardboard houses the family starts refreshing with each others. Babies are already dead from the pre-eliminary attack.
After 15 minutes, the machine is turned off. The only survivors are Deibu with immense amount of paste. They will starts eating their dead husband and vulnerable to be cleaned easily.
After that, the Factory staffs starts cleaning up and put accessories to places that can be used as nest. The death stench will keep strays from making nest there.
Experiment is a success. Because there's no need to chase escaping yukkuri, extermination can be done faster and with less personnels.
Later, the machine is also made for farms where it will make any approaching yukkuri dead of refreshing before they caused any damage. Stronger multi-sensor machines can also kill the U-Pack tamed by yukkuri and used as aerial transport.
Bigger version can also disable a Dosu.
Yukkuri are creatures who wanted to take it easy. In extermination, they will run away from the uneasy massacre to save their life. But what if they're attacked with pleasure ? They can't escape pleasure because it's an easyness they always desired instinctively.