Information on Daiji - alternative Kanji used for numbers
What is Daiji
In anime and comics, you may have seen unfamiliar Kanji letters used for numbers - "第壱話 [Episode 1]" for example.
These Kanji letters are called Daiji 大字 - formal numbers.
大字 is used in legal and financial documents to prevent manipulation (e.g. adding two horizontal bars to 一 [one] becomes 三 [tree]).
In anime, 大字 is used to give eccentric taste.
List of Daiji
|佰||百||100 / hundred|
|仟||千||1,000 / thousand|
You should know that such Kanji letters are sometimes used and that would be good if you can read them. You don't have to be able to write them.