(You're Ayano Aishi.)

You walk to school. The only reason you go to school is because Senpai is there. His name is Taro Yamada. Ever since you met him your entire life changed. Before you met him, your life was gloomy and depressing, but when you met him... Your number one life goal is to marry him! You're extremely obsessive over him, and well...who couldn't be? But that's the problem...

You make it to school and notice Senpai is standing under a tree, near the school entrance. Except... There's a girl with him. She has orange hair with long twin tails. She's talking to Senpai! Your Senpai! "The audacity..." You think to yourself. You decide to hide behind the tree, to listen in to their conversation...

"Ugh, you can be such a pain, Senpai!" Osana says.

"I'm sorry..." Senpai apologizes.

"I can't believe you slept in again! It's just like back in middle school!" Osana continues, scolding him.

"I'm sorry..." Senpai apologizes again, scratching the back of his head.

"I'm not your personal alarm clock, you know! You can't rely on me to wake you up everyday!" Osana crosses her arms.

"I'm sorry. If it bothers you so much, maybe we should stop walking to school together..." Senpai says, and you smile at the thought.

"N..no... That's not what I..." Osana pauses for a moment, before speaking again, "Just forget it, okay?!"

"ANYWAY, I want you to meet me at the school rooftop at lunchtime. Got it?" Osana says, changing the subject. You roll your eyes.

"Huh?..why?.." Senpai asks her, confused.

"Stop being so difficult! Just be there, all right? And don't keep me waiting!!" Osana demands, and Senpai still looks slightly confused.

"Okay, okay... I'll be there." Senpai sighs, giving into her.

"Good!" Osana smiles satisfied.

They walk into the school. You're mad at Osana... She's trying to steal Senpai. You decide you must stop Osana...even if it means killing her. Usually that'd be easy, but Osana has her best friend Raibaru. She never leaves her, like ever. And unfortunately Raibaru is really good at fighting. If you ever tried attacking Osana, Raibaru would probably attack you too. So...you first have to get rid of Raibaru...

Info-Chan told you that Osana was planning on confessing her love to Senpai on Friday, under the cherry tree. And there's a legend that they can't reject you under a cherry tree. It's currently Monday so you have about four days to get rid of Osana. You could befriend her, then betray her after she's gained your trust. You'll think of something. Just remember to get rid of Raibaru first, somehow.

You make it to class.