In the halls of the World of Pride, you venture off to rescue Karukozaka High School from the Expanse, a realm of demons of all kinds. The person that put you and the school here was a boy by the name of Ideo Hazama, a student that was bullied by the other students. Sending the whole school into the Expanse in hopes that they will all die. To save the school, you must go through the different Worlds of the Expanse and defeat the bosses of each one. Equipped with a baseball bat, you continue forward until you see a familiar face. A female Karukozaka student fighting a bunch of demons.

"Fucking bastards! Take this!"

You recognize the girl being Yumi Shirakawa of class 2-C. Though you two haven't formally met, you have heard of her from other students at the school. She was alone in fighting the demons by herself using a baseball bat that, like yours, is from the school's gym supply room. You decide to rush in and help her beat the demons. Once that was done, she looks to you with a relieved grin and says.

"Thanks for your help, I don't know what I would have done if you haven't come. You're a Karukozaka kid, right? I don't think I've met you before. What's your name?"