SELECT "Romaji Title" FROM table_63168 WHERE "Japanese Title" = '花より男子2（リターンズ）'
Which Romaji Title has a Japanese Title of 2 ?
CREATE TABLE table_63168 (
    "Japanese Title" text,
    "Romaji Title" text,
    "TV Station" text,
    "Episodes" real,
    "Average Ratings" text
)