The phrase “lecherous monk or lama” most likely points to Miroku , the flirtatious monk character from Inuyasha , not a real-world Tibetan lama. The strongest book-related connection I found is not a book about him specifically, but a reference to Inuyasha as the manga/anime source of the character, while the search results on “lama” mostly refer to Tibetan religious titles rather than that fictional trope.

Who it is

Miroku is a fictional Buddhist monk known for his womanizing behavior in Inuyasha ; fan discussions often call him “lecherous” because of that running gag. In contrast, “lama” is a Tibetan Buddhist honorific for a spiritual teacher or monk, so the word itself does not identify a specific person.

Books connected to this idea

  • There does not appear to be a well-known book centered on a “lecherous monk or lama” as a single historical figure.
  • The most relevant book-adjacent source is Inuyasha , the manga series by Rumiko Takahashi, which is the original work featuring Miroku.
  • If you meant a Tibetan religious figure with scandals or controversy, a related book is Secret Lives of the Dalai Lama: The Untold Story of the Holy Men of Tibet by Alexander Norman, which discusses the Dalai Lama lineage and some unconventional or troubled figures in that history.

Best match

So the best match is probably Miroku from Inuyasha , and the main “book” to look at is the Inuyasha manga itself, rather than a standalone biography. If you meant a real monk or lama from a specific story, that name would narrow it down a lot.