In a novel: "I heard a large explosion from behind. Startled, I turned around."
In a cell phone novel: "Boom! I was surprised and turned around."
In a light novel: "From behind an intense explosion was heard, and so I decided to turn around, my thoughts flirting with the bothersome incident and finding its feet with the fact that I had not had lunch."
Ikegami Akira would say: "Now, what exactly is an explosion, you may ask. Don't we all have that question sometime in our daily lives? I have prepared a chart explaining this concept, please look here."
佐天「場所は、第一学区中央ビル地下。アクセス権限者はGENSEI KIHARA。この人は今アメリカが資金提供してるThe Institute of Advanced Technology for Mankindって所で研究所長やってて、その中央ビル地下で多重感応能力創造計画?って和訳になるプランを実行中です」