A/N: Time to start a new story (which I may not finish, damn you school!), mixing together two things I love: Death Note and Touhou. Before we start though, I need to start off with the 3 Touhou characters that will be get stuck in the Death Note universe: Reimu Hakurei, Marisa Kirisame, and Cirno. Take note that this takes place during the time of Touhou 6, when the two main characters meet Cirno.
Disclaimer: I don't own Touhou or Death Note. They both belong to their respective owners. Enjoy the story!
Prolouge
In the Misty Lake, Cirno was flying around her home until she saw Reimu and Marisa walking towards her.
"Hm, now who are you? Have you come to see my incredible skills," Cirno grinned.
"No, we just came to figure out if you blocked off the sun with some mist, considering you live in the Misty Lake," Reimu explained.
"Yah! We want to know if you did this or not ze!" Marisa repeated what Reimu just said.
"Absolutely not, the strongest will never do that to Gensokyo, but a challenge is something I demand to see if I am the stronger of you two!" Cirno said as she got ready to have a danmaku battle.
"I've got this one Reimu! Don't interrupt this fight," Marisa reassured as she pushed her friend aside.
"Ready? I'll let you have the first move, since I'm way stronger than you," Cirno allowed Marisa to attack first.
"Alright then, Star Sign: Meteoric Shower!" Marisa said as an array of colored stars was shot at Cirno.
"Ice Sign: Icicle Fall!" Cirno casted her spell, but the icicles she was letting out were going to the side only (A/N: Take note that this is the Icicle Fall spell on Easy Mode) and not towards Marisa. Thus, allowing Marisa's spell to hit Cirno directly.
"Hahahahaha! You can't even hit me with that weakling spell, you baka," Marisa wasn't taking Cirno seriously and was laughing hysterically.
"Grrrrrr! Don't call me a baka! I'm certainly not a baka! You're the baka!" Cirno was whining, using the same spell again and missing obviously. Apparently, Yukari happened to be watching the fight for she had nothing else to do, hiding from sight since she didn't want to fight at this time. Seeing the danmaku battle go to a downfall after Cirno's first spell, Yukari felt like she could entertain herself more, and opened up a gap right behind Cirno, having Cirno fall into the dimensional gap.
"Whoa! Did we win ze?" Marisa blinked at first thought of the gap coming out of nowhere and taking Cirno away to another dimension.
"Well, I was considering going to go to the Scarlet Devil Mansion that is up ahead, but I can't bother but worry for that girl. Even though she's obviously a baka, we can't just leave her to die in another place outside Gensokyo," Reimu looked with content.
"Fine, we'll go fetch her back here," Marisa sighed, grabbing Reimu with her as she pulled her into the gap with her.
"Wait! I didn't say for both of us to go! We still have the mist to take care of!" Reimu shouted as both went in before the gap had sealed up.
A/N: The only reason I had Yukari in this too is because she's the main reason that Reimu, Marisa, and Cirno are taken to the Death Note universe. Please review also!