Eren Yeager's Wife's Manga

When Linari, who was executed alongside her family due to the tyrant crown prince’s plot, opened her eyes, she returned three years into the past. She vowed to change their fates, doing so by crossdressing in order to assist Fortis Academy in her younger twin brother, Liam's stead. However, the crossdressed Linari caught the eyes of Perseus, the quartet led by the crown prince. An isekai academy love story begins... one where she can’t ever be caught!

After the third time succumbing to the same rare illness in a BL novel, Robelia Flor couldn't take dying the same way anymore. So, special measures were taken.

She disguised herself as a servant named Robel, to serve a sick young master whose very breath, riddled with spiritual power, could heal her. But serving said individual was not easy…

In order to survive, I kissed the protagonist and we became life partners. But I can’t believe that the ‘kind’ male lead in the original novel was all an act! We were bound together by an intertwined fate, sharing the same wounds, pain, life and death. Plus, is contact for the sake of symbiosis necessary? With his mask uncovered, he was readily cruel to me. Overworked, grueling demands… Why can’t I be with another man?

Do you have any idea what happens when a little bunny goes to a den of wolves? Hinako has a dreadful fear of boys due to her past. But to save her twin brother Hinata from a crisis, she has no choice but to muster up her courage and attend his all-boys high school in his place! As luck would have it though, Rei, the school troublemaker who also turns out to be her brother's dorm roommate, sees through her ruse on her first day! Prepared to be sent home immediately for her actions, Hinako is surprised when Rei decides to help her out with her plan. And thus, with the single guy who knows her secret by her side, Hinako begins her new, sweet, exciting life as a high school boy!