Introduction

"If at that time forty years ago, I had taken that film canister and immediately retraced my steps, following the gradually descending underground river with the current, then perhaps none of what followed afterwards would have happened."

However, in the dark underground river, we made a completely opposite decision.

Until now, I don't know whether my decision was correct or not, but I believe that even if time were to rewind to that moment, I would still make the same choice.

"Personality determines destiny."