Which Theme Song(s) has a Japanese Title of 恋におちたら～僕の成功の秘密～?
CREATE TABLE "2005_spring_season" (
  "japanese_title" text,
  "romaji_title" text,
  "tv_station" text,
  "theme_song_s" text,
  "episodes" real,
  "average_ratings" text
);
SELECT "theme_song_s" FROM "2005_spring_season" WHERE "japanese_title"='恋におちたら～僕の成功の秘密～';