People Are in Hokage, but the System Is Living in Fantasy?

The protagonist traveled through time and became Naruto's classmate. At this time, Naruto failed to graduate and wanted to steal the seal scroll. "Ding! Congratulations to the host for crossing into the Xuanhuang Realm." What, a fantasy world, am I not in Naruto? Lin Yu thought. "I have reached the third level of cultivation. You are a newbie. Be careful of being killed by passers-by!" Are you already a Jonin in the third level? It's better if I don't kill others. "Complete the mission and the reward will be a 25-fold expansion of the meridians!" Lin Yu stood on a slug thousands of meters high and said to Naruto, I want to compare chakra with you. What? The Caged Bird Curse of the Hyuga family cannot be solved by anyone. Look at the curse-breaking pill from my fantasy world. Do you have a tailed beast? Look at my imperial bloodline, the violent panda! Eight Gates Dunjia? Look at my pure body and knock you away! Susanoo? Look at my heaven and earth, golden giant!