A/N: Wow, three chapters in a day is a new record for me! (I think…) Anyways, let the prank war begin!

'Dear Hitachiin twins,

we are formally declaring a prank war upon you. You may accept or decline as you see fit. Just know that if you decline, we will claim the titles of class clowns and tricksters. If you accept, prepare to get your asses whipped.

Sincerely, the Kagamine Twins

P.S. Don't open the door to music room three for a while. Just trust us on this.'

-Ru ri ra, ru ri ra, hibiku IRREGULAR no kodo-

Hikaru slammed a fist into the wall, effectively smashing the letter.

"The nerve of those cocky little brats! Where do they get off, thinking they can diss us like that?"

"Hikaru calm down, they're trying to get you mad so you can't focus. We'll beat them and put those twins in their place, simple as that!"

"I know, but it's still infuriating! Let's agree to win, no matter what."

Kaoru smiled, "That's more like it. Now let's 'formally' accept this war."

-Hikiyosete magunetto no you ni-

'Dear Kagamine brats,

we are formally accepting your stupid war. If you think you can beat us, you are either stupider than you look, or extremely confident. I wish I could say this will be fun, but I doubt it. Too bad you're not both girls, but at least we can get one of you with our special Host Club 'type'.

Sincerely, the Hitachiin Brothers

P.s. You might wanna duck. Trust us on this.'

Rin looked at her brother. "What do you think they mean, duck?"

A pie sailed through the air, aiming for her face. She sighed and flicked her wrist. Rin clipped the edge of the tin, causing it to land perfectly on the teacher's desk, unharmed.

"If that's the best they've got, this will be easy." Len said, smirking.

-Sayonara aishita hito koko made da-

Hikaru reeled back in shock.

"What the hell? How is that even possible?" he asked his twin, who looked just as startled.

"I don't know…" he said slowly. "but this might not be as easy as we originally thought."

Hikaru smiled, an exact copy of the Cheshire cat. "Then I guess we'll just have to step things up a bit, won't we?"

Kaoru had a similar grin on his face. "That's just what I was thinking."

A/N: So every time I switch between twins, I'm going to use a lyric from a Vocaloid song. For this chapter, the songs are Capriccio Farce, Magnet, and Just Be Friends, in that order. For those who either don't speak Japanese or have never heard the songs, they go like this:

Capriccio Farce: Ru ri ra, ru ri ra, the echoing heartbeat of the irregular

Magnet: Draw me closer, as if we were magnets

Just Be Friends: Goodbye, my love, this is the end