I Was Reincarnated as the Heroine on the Verge of a Bad Ending, and I'm Determined to Fall in Love! manga volume 1 features story by Kotoko and art by Ikuto Nanase.

A dating sim enthusiast wakes up in the body of Reine Waynewright: an adorable otome heroine in a fantasy game! Reine discovers that in this world, she's a lowly F-rank student at the magical Heartfelt Academy, bullied by her classmates and snubbed by her love interests for her lack of talent. Determined to avoid a Bad Ending, Reine resolves to study hard, practice her magic, and pass the exams to increase her rank!

If she grinds hard enough, she may be able to change her fate: make new friends, improve herself, and maybe even fall in love along the way!

I Was Reincarnated as the Heroine on the Verge of a Bad Ending, and I'm Determined to Fall in Love! manga volume 2 features story by Kotoko and art by Ikuto Nanase. 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…?

I Was Reincarnated as the Heroine on the Verge of a Bad Ending, and I'm Determined to Fall in Love! manga volume 3 features story by Kotoko and art by Ikuto Nanase.

It's Sports Day at Heartfelt Academy, and the pressure is on! Despite her total lack of experience, Reine is set to participate in the horse race and sword-fighting competitions! Who better to help her prepare than two of her finest suitors, Arnold and Yoshida?!

Much to Reinhardt's dismay, Reine's hard work and charm attract the attention (and affection) of her classmates, while Julius's sister-complex threatens to derail her budding relationships. Despite Julius's interference and Jenny's bullying, Reine is determined to make friends, fall in love, and rewrite the loneliness of her previous life!

I Was Reincarnated as the Heroine on the Verge of a Bad Ending, and I'm Determined to Fall in Love! manga volume 4 features story by Kotoko and art by Ikuto Nanase.

As the dust settles on Sports Day, Reine sets out to thank everyone who helped her get through it! But when Reine asks Julius what she can do to repay his kindness, he suddenly tells her to become an S-Rank! But why now?! And what if Reine can't…?

At Julius's birthday party, Reine meets her dashing cousin, Cecil, who seems to know something about Reine's buried history with Julius… While the plot thickens around Reine's mysterious past and her possible future in this otome world, Reine tries her best to enjoy the present, surrounded by all her friends! …Which now includes Prince Theodore, who — it turns out — speaks!