Isekai Desu Ga Mamono Saibai Shiteimasu

A brief description of the Isekai Desu Ga Mamono Saibai Shiteimasu manga:

One day, Kyouji Himuro was knocked on the door. When he opened it, he discovered that he had entered another world. His life in the new world turned out to be like this. He has no fighting skills, no money, and nowhere to earn his living. When Kyouji looked for food in a pile of garbage, he found the seeds and decided to grow his own food. But his plans changed when he realized that monsters were growing from these seeds…