Douluo: the Fierce Sun That Will Rise in the End

As a graduate student, Bai E was knocked into the Douluo Continent by luck just because he was playing "Honkai: Star Rail" while crossing the street, and became Moon's great-great-grandson and Beibei's brother. At the age of six, he awakened to the ritual swords of "Invasion of the Morning" and "Years", and the "Cosmos" system. Can he save others, defeat Tang San, and finally attack the people outside the world?