Half a year has passed since Yurgenschmidt inaugurated its first underage aub. Hannelore, now an archduke candidate for the country's top-ranked duchy, is in the midst of a crisis. Despite her natural indecisiveness, she finds herself pressed to choose from a growing list of marriage candidates. Her father suggests Kenntrips and Rasantark—her childhood friends—but then her half-brother Raufereg throws his hat into the ring. And what about Wilfried, the apple of her eye? Convinced that Liebeskhilfe the Goddess of Binding is toying with the threads of her fate, Hannelore turns to her dear friend Rozemyne for guidance. In the debut volume of this battle fantasy, the divine avatar fights to settle an engagement! Features two original short stories and four-panel manga by You Shiina.

Honzuki no Gekokujou: Hannelore no Kizokuin Gonensei began as a web novel on Shousetsuka ni Narou on April 28, 2017. TO Books has released a revised and illustrated version of the series since August 10, 2024, under its TO Books Ranobe label. The series has been published digitally in English as Ascendance of a Bookworm: Hannelore's Fifth Year at the Royal Academy by J-Novel Club since May 23, 2025.