What is the total number of episodes for クロサギ?
CREATE TABLE "2006_spring_season" (
  "japanese_title" text,
  "romaji_title" text,
  "tv_station" text,
  "episodes" real,
  "average_ratings" text
);
SELECT COUNT("episodes") FROM "2006_spring_season" WHERE "japanese_title"='クロサギ';