Genjitsu Shugi Yuusha no Oukoku Saikenki

The story centers on Souma Kazuya, a young man who finds himself transported to another world. Upon arrival, he discovers a country on the verge of collapse, facing famine, poverty, and the risk of invasion. Kazuya then proposes a plan to the King aimed at strengthening the country economically and militarily. However, after discussing it with the King for two full days, the latter suddenly cedes his throne to him and offers him his daughter's hand in marriage. To support him in his plan, Kazuya puts out a call to anyone with a talent that could be useful to the country. To select from the many candidates, he organizes tournaments in different categories. At the end of these tournaments, five people find themselves before the King. Will Kazuya succeed in saving the country before it sinks further into chaos?