Dojyomaru 
How a Realist Hero Rebuilt the Kingdom: Volume 18 [EPUB ebook] 

The Demon Lord’s Domain has been liberated, ushering in a new era. However, with the demons no longer a common enemy, the threat of a power shift hangs in the air. Who will triumph if the Maritime Alliance led by the Kingdom of Friedonia clashes with the Great Tiger Empire of Haan?

While Souma is busy mobilizing his personnel to prepare for an impending conflict, Yuriga approaches him with a shocking request to return home. He initially doubts his ears, but it’s part of a surprising plan to corner Yuriga’s brother, the Great Tiger Emperor?!

All this and more in the eighteenth installment of the revolutionary transferred-to-another-world administrative fantasy series!