CREATE TABLE table_73021 ("Japanese Title" TEXT, "Romaji Title" TEXT, "TV Station" TEXT, "Time Frame" TEXT, "Starring Actors" TEXT, "Theme Song ( s ) " TEXT, "Episodes" FLOAT, "Average Ratings" TEXT)

What is the title with an average rating of 22.4%?
SELECT "Romaji Title" FROM table_73021 WHERE "Average Ratings" = '22.4%'
SELECT "Romaji Title" FROM "table_73021" WHERE "Average Ratings" = '22.4%'