Here's why:
* Japanese uses a different writing system: Japanese uses three main writing systems: Hiragana, Katakana, and Kanji. There is no equivalent to the Latin alphabet letter "p" in these systems.
* Pronunciation: The sound "p" does exist in Japanese, but it's represented by the character "パ" (pa) in Katakana and "ぱ" (pa) in Hiragana.
* No single letter "p": There is no single letter in Japanese that corresponds to the "p" in the Latin alphabet.
Example:
* The word "pen" in Japanese is written as "ペン" (pen) using Katakana.