Immortal Cultivating In Anime Worlds

Zhao Si transmigrated a month ago in a oriental fantasy like Xianxia world and he became an introductory disciple of the Maple Leaf Sect. He was a senior fantasy fan and moreover he had the right personality to adapt to this new changed world and life. 
Finally he had also peaked up a dimensional anime system thanks to his transmigration: this system could provide him with dimensional travel for accomplish missions, but Zhao Si had to cultivate on his own, following the sect rules and the help given by this system was to provide him with all kinds of things to support him and his identity, other than the eventually rewards for the completion of assigned missions. 
For the first mission he had to earn the respect of two girls and help them to accomplish some advancement in cultivation. Doing so he began to live with the two girls, and finally he wake up completely his system only to discover that inside it there was also the spirit soul of his dead sister…What was going on?