Izushiro 
The Greatest Magicmaster’s Retirement Plan: Volume 17 [EPUB ebook] 

A day has finally been set for the Tenbram, the mock war between nobles, and Tesfia’s showdown against Aile of the Womruina family is closing in! With her engagement on the line, Tesfia desperately trains under Alus’s instruction. However, an emergency happens during the latest family meeting. Of all things, people of the branch families rise up in revolution, and the genius girl Theresia rises as a new candidate for the new head of the Fable family when she challenges Tesfia! As the two girls clash, the fate of the Fable family hangs in the balance. What is the best move Alus can make to respond to the chaos growing from Aile’s behind-the-scenes moves.