A/N: My very first fanfiction I have ever written! It was first published in Wattpad but I like it better in . Anyways please don't get mad for writing this fanfic. It's my first! Thanks for your help STG Group and Literature club at University Of Mindanao Ilang-Tibungco Junior College Campus!

A Gravity Falls Fanfiction created by the STG Group: Twins Death Day

Summary: When Dipper was playing a prank for Soos and he thought that it will be a another ordinary day but it wasn't.

Rated M for blood and gore.

It was a normal day at the mystery shack. Not so many tourists have shown up, Wendy and me were laughing so hard because we prank Soos with a plastic spider while Mabel was knitting a new sweater. "Hahahahaha! We got you Soos!" Dipper and Wendy shouted at Soos in unison. "Dudes, you totally got me there!" Soos replied them happily. Dipper went nearby to Mabel who was making a new sweater. "Whoa Dipper you really got me there too!" Mabel said to Dipper who was wearing a Gobblewonker mask. Mabel went into the attic to get more yarn. Mabel had a unexpected visitor in their attic looking for the Journal 3. She knew who was the visitor. It was Bill Cipher. The one you see in a dollar behind it. "What are you doing here Bill?" Mabel asked Bill who was busy searching the entire attic room." I am here for the journal then if I have the journal I will kill you and Dipper. You two know too much about this town." Bill answered Mabel's question while pointing his eye to her. He shot his laser eyes toward Mabel and BAM! Mabel was shocked that she wasn't the one who got hit. It was Dipper, who bravely defended his sister. He was just going also to the attic to get 3 and go back downstairs but when he heard Mabel and Bill talking about 3 and taking their both lives, He sacrificed his life to save hers. But it still no use defending her because he knew that Bill will also kill her but he still defended her anyway. "You fool! It is still no use defending her but anyway you will still be dead.. Mwahahahaha!" Bill said when he goes in range to shoot Mabel. Then BAM! She too died. When they both woke up, They saw each other laying side by side on a really wonderful garden like landscape. Happily laughing together but when they got up Dipper kissed Mabel lightly in the cheeks while saying this"Mabel, I know it's wrong to love you more than I should, But I Always loved you more than like your my sister-" Mabel put a finger in his mouth to stop talking. Then she spoke first "Dipper I know that you love me like you shouldn't and I also feel that." Mabel said to Dipper then she kissed him.

" I love you Mabel" Dipper said happily

" I love you too Dippingsauce" Mabel replied.

How was that? I didn't intend it to be incest at the end but it was good to finally write a fan fiction. Anyways R&R!