A/N: Sorry about the wait. I kinda didn't feel like uploading the second part. But here it is now. Also, I'd like to thank PetalGirl for reviewing. And indeed, you're right. And thanks for believing in Dipper. Also, to all those who favorited and followed the story, thank you too! That aside, read on.

Depressing Trigger Warnings Possible!
Prepare Your Tissues!

Roles
Dipper: Ace
Bill and Mabel: Me

Darkening Souls
Chapter Two (Part Two): Nightmare in Reality

Dipper sat on a log, obviously having decided to move, in the forest.

I need to hide. Run. Go somewhere, far away, so I can never see her again. She probably doesn't even want to see me. She hates me. As much as I hate her. But I don't hate her. She's my sister. I love her. Don't I...? the thoughts were driving him insane. "Who am I, Dipper Pines, brother of Mabel Pines? Do I hate my sister or do I love her? could I ever stay away from her? could I resist the impulse to return, to hug her, or to kill her?" he sighed, and found he was sobbing.

Bill was currently watching this, chuckling to himself as he held Dipper's currently blackened soul in the palm of his hand. It was fun seeing the Pines suffer...

Mabel didn't know what to think anymore. Her whole life revolved around her brother, even if she may not have acted like it at points... and for him to say what he said to her... it... wait...

She lifted her head out of her sweater, remembering that his eyes had gone red. He really didn't mean that... did he? something else was there...

Dipper stood up with solid eyes, "I've chosen." He began back towards the Mystery Shack.

Mabel, still crying, hopped off the bed and started to run out to the forest, looking for her brother so she could help him sort all this out. He soon saw her. He had normal, white eyes. He smiled, "Hey, Mabel..." he ran to hug her.

"Dip-Dop!" she grinned, and then also ran to hug him, "I'm so glad you're okay!"

"Me too," he grinned and wrapped his arms around her. And then his eyes changed. It all happened so fast. The knife was in his hand, and he stabbed her. Then he stepped away, taking the bloodied knife out, grinning at her.

Mabel gasped, for a while not registering the pain... but soon she did. She knelt, clutching at the wound, and her world was swirling at this point. She put two and two together while she still had her wits about her and eventually realized her brother had done this...

"D...Dipper..." was the only thing she could say, a look of pure shock and pain on her face.

He laughed, staring at her, "You should see the look on your face, Mabel! priceless! you're adorable... and you look so much better in crimson, might I add!" he grinned horribly at her.

"N...no... you... you're not Dipper... y...you're B...Bipper... b..but h..." she couldn't get her question out. She was losing too much blood, and she couldn't stay up on her knees anymore... she forced herself to do so, though, looking into his now blurry yellow eyes.

"Bipper?" he raised an eyebrow, "doesn't Bipper call you Shooting Star? doesn't Bipper hurt himself and not others? face it, Mabel, I hate you. You've never been there for me, and I've always been there for you. This is my revenge. This is what I've always wanted to do, since you've never done a single thing for me!

"How does it feel, huh? how does it feel to have your world turned upside down and everything you worked for destroyed?" he laughed maniacally. "Doesn't feel very good, does it, eh?" he was twirling the knife in between his fingers, grinning at Mabel with that horrible smile. Those terrible eyes. But that was Dipper's smile, and Dipper's eyes.

"N...never...? b...but the grappling hook... a...all those times we... we adventured... di..didn't I help...?" she managed to speak, despite feeling like she wanted to hurl, and her words were slurred, just like her waking world.. she felt like she was going to die...

Bill cackled, and his finger started turning blue, Dipper's blue. He raised it above the black soul, but he didn't touch it yet, waiting for exactly the right moment.

"Sure you did, Mabel," he rolled his eyes. "You helped make everything worse! that's all you ever do. You make things hard for me, and now, you'll never be there to make anything hard again!" he smiled softly, evilly, "So, Mabel, any last words? anything you wanted to say but never had the chance? any dark, dark secrets or anything?" he raised an eyebrow, smirking at his dying sister. Like it was funny.

Mabel said nothing for a while, coughing up blood at this point. Eventually, she, through tears and a wobbly voice, said, "Y...you'll al...ways... be my... bro-bro... n..no matter... what..." and then she gasped for air, coughing up more blood, before she collapsed, losing consciousness.

Bill grinned. It was time now... and then he touched the tip of the boy's soul with his blue finger, and it, in turn, slowly started to regain its former color. Dipper laughed as he saw his sister fall. After a few seconds, though, his laughter turned into sobbing. He dropped the knife and it fell with a clink.

"What have I done?" he asked, staring at Mabel's lifeless body, falling onto his knees. His eyes were wide and terrified. There was no one there to answer him... nothing was there to answer him... the wind picked up again, whipping through both his and his sister's hair, but it wasn't heralding Bill's coming as it was howling a seeming sadness... it was as if the forest was mourning too...

He couldn't bear to look at her a second longer. He ran. He didn't know where he was running, why, or when he would stop. He just had one purpose: to get away. To find somewhere, somewhere specific...

He reached the end of his run. He was standing at the edge of the Gravity Falls cliffs. Below him was a waterfall and a closed off railroad. The rushing of the water pounded in his ears. The wind seemed to howl even more, as if protesting his suicidal notion. It threatened to toss his hat off his head once again. He grabbed it, sighed, and hung it on a nearby tree, "I won't be needing you. You've been there for me every step of the way. Watch over these woods, over this town. Keep my friends safe. Keep her friends safe."

He glanced at the sharp rocks and water below. He took a few steps back, and took a running jump off the cliff, into the certain death below. A sudden pain, and then nothing. Dipper Pines was dead.

The wind stopped howling. It was silent in that forest... and then Bill appeared for a brief moment, coating the world in grey. He looked down at Dipper's dead body splattered on the rocks, and chuckled. And chuckled again. Then that chuckle rose into a fit of crazed, celebratory laughter that seemed to last an eternity.

"Oh, it's happened! it's finally happened! the voice of reason in the family is gone! and that's one less Pines out to even attempt to stop my plans!"

Why he said "one", you ask? why, he knew Mabel Pines, in fact, wasn't dead. But her he wasn't particularly worried about. She, like he had convinced her brother, was useless and nothing but a burden. He threw one fist pump into the air, before he vanished once more, and color was restored once again. Who knew at the time that, ignoring Mabel Pines, would be the biggest mistake he ever made...?

A/N: And that concludes Chapter Two. I hope you enjoyed. Since I didn't upload this part like I was supposed to, you'll get Chapter Three Sunday. It's my apology to you. And please review. I'd love to see what people think.