The Princess of Convenient Plot Devices, Vol. 1 (manga)

Stepping into the world of your favorite book might sound like a dream come true, but for Maki Tazawa, this very opportunity presents a unique challenge. A passionate lover of BL novels in her previous life, Maki now gets to spend her days as princess Octavia, and enjoy the company of her favorite fictional couple--her brother, the crown prince Sirius, and his lover Lord Sil. But two men can--t produce an heir! As the story goes, in order to solve the problem of succession, princess Octavia agrees to a political marriage and offers up her own child to the throne. But this Octavia can--t accept such an unfair fate! So what if she lives in a BL novel? Her OTP achieved true love and she--s determined to do the same!