It was a normal day at the town of Misora. At the Elementary School, child popstar Onpu Segawa and her classmateswere doing normal stuff when the school's bully/diva, Leika Tamaki, entered the classroom with starry eyes. She seemed to hold a paper with three chipmunks on it.
"Great news, people! Alvin and the Chipmunks are going to perform here, at the Misora Concert Hall!" Leika shouted.
Since most people in the room didn't knew who were Alvin and the Chipmunks, the whole class except Onpu and her two friends, Hazuki Fujiwara and Aiko Senoo, got out of their seats and gathered around Leika.
"I don't understand. Who are those Chipmunk guys?" asked Onpu.
"I've read about them on Internet." Aiko said, "Some guy named Dave adopted them, and now they're just like you: super famous."
"Oh, Onpu, I just forgot, you're gonna perform alongside Alvin and the Chipmunks!" Leika added.
Onpu was surprised. "What the heck--?"
"Don't worry, Onpu-chan. You're gonna be fine. I know it." Hazuki smiled. Onpu smiled back.
-------------------------------------------------------------------------------------------------------------------------------
Later, it was the night of the concert. At Misora Concert Hall, Onpu looked at herself in the mirror. She now wore a purple sweater/hoodie, brown pants with a tan stripe across between the legs, and brown shoes. She also had on fake chipmunk ears and a chipmunk tail for some reason.
"That's odd, Onpu." Onpu said to herself, "You're performing with some kind of boy band that you don't know. Isn't that scary?"
"Ten minutes, miss Onpu." said the guy that helped the manager.
Onpu smirked as she walked out of her dressing room and said, "Well, it's showtime."
"Wait!" a voice called. Onpu turned to see Hazuki, Aiko and her other friends, Doremi Harukaze and Momoko Asuka, running up to her. "Girls, what are you doing here?" asked Onpu.
"We just wanna wish you good luck..." Aiko said, and then smirked, "...chipmunk girl."
Onpu nodded, and then she walked out to backstage to perform... But is it what she thought?
(End of Chapter 1)
Ah well. Original idea. This is still a bit better than some of the crossovers I've imagined...