Read One Piece: Sign-in System fanfiction written by the author Riyuuu on WebNovel, This serial novel genre is Anime & Comics fanfic stories, covering adventure, system, overpowered, transmigration, onepiece. ✓ Newest updated ✓ All rights reserved
Toshiro transmigrated into the World of One Piece and has a loving and kind-hearted family. But one day, their happy family is destroyed by a passing Celestial Dragon. Toshiro's parents were killed, and he himself was taken into slavery and tortured day and night. Until one day, Fisher Tiger climbed the [Red Line] and caused a mess in the Holy Land of [Mary Geoise], liberating Toshiro and other slaves and also awakening his "Sign-in System." Remembering the suffering he had experienced in [Mary Geoise], Toshiro practiced hard and used the system to develop silently until he had the strength to pull down the Celestial Dragons on the altar.