Watashi is the most widely-used first-person pronoun in Japanese

Native speakers say "watashi" to refer to themselves in Japanese. In this blog post, this word is explained based on its kanji expression.

How to Say 'I' or 'Me' in Japanese - 10 Ways to Say 'I' or 'Me' in Japanese

First Person Pronouns

I tried making a list on which Personal Pronoun each character used to refer to themselves in the first-person in the Japanese version (Read the post comment for more clarification of pronouns

Japanese Pronouns Made Easy In A Few Simple Steps

Learn All the Hiragana Characters in Japanese

Japanese First-person Pronouns Tier List : r/DragaliaLost

Tricky Translations #4: “I” & “Me” in Japanese « Legends of Localization

Watashi is not the only first person word in Japanese!

50 Important Japanese Pronouns You Need To Know, by Ling Learn Languages