 If you liked
Genjitsu Shugi Yuusha no Oukoku Saikenki
|
 ...then you might like
Salaryman ga Isekai ni Ittara Shitennou ni Natta Hanashi
|
The main characters in both series are summoned to another world to solve problems on behalf of their summoners' countries
Both mc rely on their rational and practical knowledge and skill of the modern world to overcome challenges and build relationships with other characters