Comprehensive Manga: Starting from Demon Slayer, the Meaning of Saving Is Hard to End

[Time travel + comprehensive comic + multiple female protagonists + semi-invincible] Lu Sheng, who accidentally traveled through time, shuttled through the animation world full of regrets, tearing apart the established tragedy. First stop, Demon Slayer: Kimetsu no Yaiba. Riku Sheng crosses over to become the younger brother of Demon Slayer Corps' contemporary protagonist, Utayashiki Yōya, but finds that he is not affected by the curse. Can you continue to become stronger by basking in the sun? Wuxian, come and bask in the sun with me and become stronger! The early plot is earlier than the original work. There is a system, but the function of the system is very small, it is only used for time travel. In the future, there will be pirates and spells in the world...