jquery-timeago/locales/jquery.timeago.ja.js

// Japanese
jQuery.timeago.settings.strings = {
  prefixAgo: "",
  prefixFromNow: "今から",
  suffixAgo: "前",
  suffixFromNow: "後",
  seconds: "1 分未満",
  minute: "約 1 分",
  minutes: "%d 分",
  hour: "約 1 時間",
  hours: "約 %d 時間",
  day: "約 1 日",
  days: "約 %d 日",
  month: "約 1 月",
  months: "約 %d 月",
  year: "約 1 年",
  years: "約 %d 年",
  wordSeparator: ""
};