"Frisk, come on. We have to go." Chara, an annoyed spirit said to her human host. The other child was blind, wandering a snowy field. They poked at every pile of fluffy, white snow with a stick, as if asking what it was. Of all humans in the world to fall down here as the seventh, it just had to be one who was this young, blind and mute.
"Behold! A snow poff!" she exclaimed in an overly dramatic, sarcastic tone. The stick moved and hit another bump in the field. "Surprisingly, it's a snow poff." she said dully. The stick hit another one. "Is it really a snow poff?" Chara asked with an obviously fade dramatic questioning tone to her voice. Frisked turned to face her, looking confused. Chara sighed and shrugged. "It's a snow poff." she said simply. Frisk smiled and nodded before heading down the path.
Out of one of the snow poffs, blocking their path was a dog. It barked happily at them. Frisk stopped, smiling at it. Suddenly the small seeming dog ruse out of the snow in heavy armour. They were in another fight.
"It's the greater dog." Chara explained simply, remembering the lesser dog from earlier that day. "Pet it." she instructed quickly. She may not be the most emotional of even considerate of people, but she did know one thing. When there was a dog, it must be pet. It was a simple fact of nature. No dog would ever go un-pet on her watch.
Frisk smiled and beckoned the dog over. It pounded up to them, panting excitedly. It ran into them hard, but the child managed to stay standing. They scratched behind the dog's ears and pet their head happily. The dog leaned into their hand. It came near to fall asleep before bouncing back up quickly and pawing the ground.
"Play." Chara instructed further, in the most simple and direct manner. Frisk had absolutely no problem carrying out this step.
Frisk tossed their stick in the direction they came from. The dog ran after it, bringing it back. They repeated this process over and over until the dog got very tired. Frisk pet it again, softly. It leaned into the small child again. This time, Frisk couldn't stay standing under the weight and fell over. They continued to pet the dog nonetheless. The armour was hard and uncomfortable to be squished under—but Frisk still hadn't pet enough! Through determination they kept going until the dog was laying back, it's legs hanging up in the air.
"You pet decisively. Greater dog is contented." Chara stated, smiling at the scene in front of her. She had always loved dogs. Cats she felt were always up to something mysterious, plotting behind the scenes. Dogs however were your best friend through thick and thin! She loved those furry, loving canines of all shapes and sizes. She patted the dog's head. Even if he doesn't see the first child in her ghostly state, she knew from past experiences that he could feel her.
The only way for any monster to be able to see her was if they both had seen her in the past whether they remembered or not, and knew she was wherever she was presently. From then on, that monster would always be able to see her. This didn't apply to humans however as their souls were much, much stronger.
The greater dog stood back up. He hopped out of his armour, licking Frisk's face before marching away, leaving the two children alone again. "I always loved the dogs." Chara stated. Frisk nodded in agreement. With the ghost only they knew about's help, they found their stick and pressed on, to whatever new dangers may come to face them in the Underground.