Japanese pronouns
According to the Japanese language blog Tofugu, Japanese has more first-person pronouns than any other language. To give examples of the complexity of Japanese pronouns, watashi could be considered the normal polite way of calling yourself if you are unsure of what to call yourself, but if you are male, you could call yourself boku or ore if you are with friends or family, but you should call yourself watakushi if you are talking to your boss or in a formal situation. If you are female, it is normal to call yourself watashi even in casual situations, although you can also call yourself atashi or uchi. The most common plural first-person pronoun is watashi-tachi, but in formal situations you can call yourselves ware-ware (which is also sometimes used to describe "the people [of Japan]). This does not describe every first-person pronoun, but this explanation is written to give the reader an idea.