The hard-boiled detective mentor of [[Hidari Shoutarou]] and father of [[Narumi Akiko]] from [[Kamen Rider W]].

He was the founder of the Narumi Detective Agency and bearer of the Lost Driver and [[Kamen Rider Skull|Skull]] Memory. Though he was killed before the series begins, he remains a strong influence for Shoutarou and Philip.
narumi sokichi