Challenge Token

Challenge Tokens are used to challenge Wild Bosses level 120 and higher. They can be obtained from the Gold Shop for 100 Gold per token, the Treasure Hunt Shop for 3 Stars, the Konoha Arrives Shop for 3 Konoha Points, or bonus boxes from Ramen. The Ramen bonuses only apply up to the 15th pull, so you can get a total of 6 Challenge Tokens from there.