The Fallen Elf Summoned an Insurance Agent

The elves, who have lost their "power to see the future," now live in fear due to their new sense of insecurity. Seigo Ichido, an ordinary office worker, is suddenly summoned to the land of the elves as a sage to help save their kingdom. But Ichido has no special abilities of any kind...

(Source: Dai-Ichi Life, translated)