Signing in at the Beginning with Madara Uchiha

I accidentally traveled to the world of pirates and awakened the "god-level sign-in" system at the beginning. Sign in to Wano Country, get a summoning scroll, and summon Madara Uchiha. Sign in to Dressrosa and get Zanpakuto Sode Shirayuki. Sign in to Fish-Man Island and wake up to listen to the sounds of all things. Sign in to the Water City, get the summoning scroll again, and summon Sosuke Aizen! Through the sign-in mission, Ling Yun's pirate ship has a new villain from another world! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.