Proofreading (also proof-reading) is the reading of a galley proof or computer monitor to detect and correct production-errors of text or art. Proofreaders are expected to be consistently accurate by default because they occupy the last stage of typographic production before publication. wikipedia.org

Japanese is a language spoken by over 130 million people in Japan and in Japanese immigrant communities. It is a member of the Japonic (or Japanese-Ryukyuan) language family, which has a number of proposed relationships with other languages. wikipedia.org

English is a West Germanic language that was first spoken in early medieval England and is now a global lingua franca. wikipedia.org

Translation from English to Japanese and Japanese to English.

Professional writing involves the use of clear language to convey information in a way that is easily understood by the intended audience. Individuals who can use language well may be employed as full-time professional writers in a variety of communications-related occupations, such as wikipedia.org

English as a second language (ESL) is the use or study of English by speakers with different native languages.

Fiction writing is the composition of not factual texts. Fictional writing often is produced as a story meant to entertain or convey an author's point of view.

Writing is a medium of communication that represents language through the inscription of signs and symbols. wikipedia.org

Translation is the communication of the meaning of a source-language text by means of an equivalent target-language text. wikipedia.org