Question: when supernatural battles became commonplace?
Answer: When Supernatural Battles Became Commonplace (Japanese: 異能バトルは日常系のなかで, Hepburn: Inō-Batoru wa Nichijō-kei no Naka de) is a Japanese light novel series by Kota Nozomi with illustrations by 029. SB Creative has published it in thirteen volumes from 2012 to 2018 under their GA Bunko imprint.