Transmigrated into the Naruto world as the cousin of Uchiha Itachi, Changfeng is devastated as the Uchiha clan massacre draws near. Then, he awakens a god-level check-in system, receiving rewards from check-ins at various locations. Check-in at the Ninja Academy rewards him with [Sage Body]; at the Naka Shrine, [Mangekyo Sharingan]; at the Hokage Rock, [Eight Gates Formation]. For five years, he secretly grows stronger through daily check-ins. When the massacre begins, Changfeng finally makes his move...