There's no official confirmation yet for a second season. But if there is one, we might see more complex political strategies and character developments.
The 'Realist Hero Rebuilt the Kingdom Light Novel' focuses on a hero's journey in rebuilding a kingdom. He starts with assessing the current state of the kingdom which is likely in a dilapidated state in terms of governance, economy and social harmony. He then formulates plans. For economic revival, he could promote new industries or trade routes. Politically, he might restructure the power hierarchy. Socially, he aims to improve the living conditions of the people. Through a series of such actions and facing multiple obstacles along the way, he attempts to fully rebuild the kingdom, which is the central plot.
The main character is the realist hero who undertakes the task of rebuilding the kingdom. There are also likely to be nobles, commoners, and perhaps some antagonists who oppose his reforms.
The main character is Kazuya Souma. He is the realist hero who is suddenly thrust into the role of ruling a kingdom. He has to use his modern - day knowledge to navigate the complex world of the kingdom.