Kokugensou wo Item Cheat de Ikinuku THE COMIC

This is the story about a bashful and inconspicuous high school student surviving a harsh fantasy world with wisdom, bravery, and very few skills. Apparently he wanted to become a hero with a magic sword, but unfortunately for him, he possesses no swordsmanship or talent for magic. The only thing he can count on is his half-baked knowledge he acquired previously from modern Japan. Now, in order to survive, he's forced to convert that knowledge of his into money. While doing so, the main protagonist will rise into becoming a secretary assistant, trade company owner who manages slave girls, knight, and a hero.

During his reincarnation, Japanese corporate slave Tadashi impresses the gods by choosing the blessing of agriculture, something no one else has chosen before, and receives unprecedented, generous blessings. He is then meant to live the slow life of his dreams in another world, but instead he lands on a huge, desolate, miasma-filled peninsula known as "Limbo"! Tadashi struggles, but thanks to his natural earnest personality and the blessings of the gods, he steadily expands the scale of his farming operations. A persecuted former elf queen, a beastwoman hero, and a master dwarf craftsman all gather in search of the goods Tadashi makes...