Question: Name the period for South Korea with peak position of #1
SQL: SELECT "Period" FROM "2-13081928-2" WHERE "Country" = 'South Korea' AND "Peak position" = '#1';

Question: Name the period for South Korea with peak position of #24
SQL: SELECT "Period" FROM "2-13081928-2" WHERE "Country" = 'South Korea' AND "Peak position" = '#24';

Question: Name the period for Chart of G-Music J-Pop/K-Pop Chart
SQL: SELECT "Period" FROM "2-13081928-2" WHERE "Chart" = 'G-Music J-Pop/K-Pop Chart';

Question: Name the sales with peak position of #24
SQL: SELECT "Sales" FROM "2-13081928-2" WHERE "Peak position" = '#24';