Provide the game publisher's name of the game with sales greater than 90% of the average sales in Japan.
game publisher's name refers to publisher_name; sales greater than 90% of the average sales refers to num_sales > multiply(0.9, avg(num_sales)); in Japan refers to region_name = 'Japan'
SELECT DISTINCT T5.publisher_name FROM region AS T1 INNER JOIN region_sales AS T2 ON T1.id = T2.region_id INNER JOIN game_platform AS T3 ON T2.game_platform_id = T3.id INNER JOIN game_publisher AS T4 ON T3.game_publisher_id = T4.id INNER JOIN publisher AS T5 ON T4.publisher_id = T5.id WHERE T2.num_sales * 10000000 > ( SELECT AVG(T2.num_sales) * 100000 * 90 FROM region AS T1 INNER JOIN region_sales AS T2 ON T1.id = T2.region_id WHERE T1.region_name = 'Japan' )