Hapi Mari: Happy Marriage?! is a highly popular Josei manga book available on Amazon. The story revolves around Chiwa Takanashi, a hardworking office lady who agrees to an arranged marriage with the company president, Hokuto Mamiya, in order to pay off her father's debts. Despite their initially rocky relationship, Chiwa and Hokuto gradually develop a deeper understanding and love for each other. Hapi Mari explores the challenges and joys of marriage, making it a beloved choice for fans of Josei manga.