The Legend of the Dragon King: Is Tang Wulin My Sister?

[The Legend of the Dragon King Fanfiction][The synopsis won't do it justice, so head straight to the story] After arriving in Douluo Dalu, Tang Yue has a little home in Aolai City. He also has an older sister who has loved acting like his big sister since they were little, and is occasionally a bit devious: Tang Wulin, with grass in her left hand and a hammer in her right. And a soft and cuddly little sister, Na'er. As time goes by, Tang Yue gradually realizes that he isn't a native of this world. Fragments of memories from a previous life lie hidden in his mind. But the story has already gone off course... Why are golden, diamond-shaped scales that sing with a dragon's roar inexplicably growing all over him? His sister isn't actually his sister? Has their familial affection turned into something else!? Tang Yue stares blankly. “Then what is this bubbling excitement I feel inside?” Why can my Blue Silver Grass Martial Soul devour things, and why does it want to snuggle up to my sister? His Soul Power is surging in on its own, beyond his control. Is his cultivation speeding up? As he enters the school in Eastsea City, he also runs into the cool and aloof girl Gu Yue. Why are all of you looking at me so strangely? QAQ P.S. The story may take a few turns, and there will be some original elements. The protagonist won't be invincible from the start; he'll grow stronger gradually. This is my first time writing, so if there are any mistakes, I'll do my best to fix them.