Kotoko 
I Was Reincarnated as the Heroine on the Verge of a Bad Ending, and I’m Determined to Fall in Love!, Volume 2 [PDF ebook] 

A dating sim enthusiast wakes up in the body of Reine Waynewright: an adorable otome heroine in a fantasy game! With the rank exam coming up, it’s time for Reine to buckle down! In spite of her classmates’ bullying, she’s determined to prove herself to both her schoolmates and her burgeoning love interests. With the help of her new friends and her possessive ‘;brother, ‘ Julius, she might just have a shot at escaping her F-rank status! After Reine saves him from being bullied, fellow underachiever Reinhardt teams up with her to study, and reveals himself to be a total hottie! Could he be an additional romance route?! And what exactly are meddling Julius’ intentions with Reine?