"Hey, can you do me a favor? My brother's a human hunting fanatic." Frisk ran away from him, ignoring the path. That wouldn't be such a big deal if he didn't convince the dangerous monsters that there was a human in that part of the forest. Now, the human is there.
Sans knew what he had to do and sighed. He can't be lazy now. Many of these monsters won't spare a human no matter what. He runs after them into the deeper area of the forest, after the kid. "Kid, he's not dangerous, really." Sans gave a desperate plea. Too bad it was ignored in favor of the kid running forward.
Grusily attacks. He can make undodgeable attacks, that is bad. Frisk was surprised when their soul turned blue. What does that mean? Sans didn't have time to explain or reveal himself when the dog monster surrounded the human in ropes, with no space for them to dodge. Sans sighed, Gruisily must have noticed he turned the kid's soul blue. "Come on, join me and get the 7th soul Sans. No need to hide it." The human's face said it all, "I knew you were dangerous."
Sans kept his cool while he summoned two bones, aiming carefully for the ropes surrounding the now sweating human. He had to be careful, the human was struggling despite there being no way for them to get free. He carefully placed his bones, one in the front and one the back of the area between the human and the ropes, forcing them away from the human. "Run, run now!" The kid ran as the monster looked at him in shock. "You traitor. We could've seen the surface." Sans took a shortcut in order to follow the human.
Now they were closing in on a three on one attack. Sans carefully observed the situation, the monsters didn't notice the kid yet. Sans turned their soul blue before forcing them towards him with his telekinesis. The human looked at him with pleading eyes. He didn't have time to reassure the kid now, silence was a must, in this area it's kill or be killed. He put a bony finger up to his teeth. The kid nodded. Hopefully his next plan wouldn't cause a scream of surprise. He grabbed the human's arm and took a shortcut to the gate where they first met.
The human looked at him, "Why?" "So you don't get killed. Stay out of there." Sans was worried the monsters he sent on a detour there may get wise to the human, so he opted to be on guard. After all he couldn't stop the dangerous monsters from talking to each other realizing he helped the human escape certain death.
"Your brother." "Not dangerous." They pointed to the lamp. "That was short sighted. Compared to the monsters you just fought he's nothing." Sans shrugged, "I'll keep an eye socket out for you." Sans never got the laugh he was expecting, the human was too scared to laugh at the obvious skeleton joke. They looked towards Sans and the gate. "I'll be right there, kiddo." Frisk ran through the gate. Sans normally would be relieved, if the kid didn't seem to think he was one of the dangerous monsters. He sighed and vowed to follow the kid from a distance.