Reitetsu Ouji wa Dekiai no Soshitsu ga Arukamo Shirenai

Saori, an office lady who died in a car accident, found herself awakened in front of a strange man.

Who is he? And where am I...?

He is a prince of the kingdom of Rokion, and he brought Saori to this world. His purpose is to have her bear his child. She was unwilling at first, but their relationship gradually changes after that first night.......

(Source: Pillow, translated)

Note: Originally self-published, it was picked up for commercial publication with an additional volume-bonus chapter.