Yuusha Shoukan Ni Makikomareta Kedo- Isekai Wa Heiwa Deshita - Raw Chapter 53 - Read Next Chapter 54 · Full Version

I should mention the protagonist's strategy in using their knowledge to improve the society in peacetime. Maybe they set up systems or technologies ahead for when problems inevitably come. Perhaps there's a subplot involving a political threat or internal strife. The protagonist might have to balance between maintaining peace and anticipating conflicts.