I recommend 'Picking Up a Prisoner of War as a Husband' to you. After the male protagonist was injured, he was picked up by the female protagonist and gradually recovered under the care of the female protagonist. However, he always relied on the female protagonist and even changed his original identity and lifestyle. This ancient romance time-travel novel was very interesting. The female protagonist was a silly chuunibyou, and her interactions with the male protagonist were filled with joy. I hope you like my recommendation. Muah ~