Reincarnated as Twilight Sparkle, Do I Rule Ponyville?

Modern young man Li Zhao, a social-anxiety-ridden shut-in who goes by the online name "Zaizai," unexpectedly transmigrates into My Little Pony as the protagonist, Twilight Sparkle. But he soon realizes he can't perfectly play the original character. Even more baffling, the original Twilight's consciousness seems not to have vanished completely, leaving behind the cryptic hint, "Just be yourself," while a vague quest to "take control of Ponyville" hangs over him. In the storybook-bright yet secretly perilous land of Equestria, he must find his own path, carrying the original character's shadow, his own shortcomings, and a group of powerful, vividly individual "future best friends" at his side, while unraveling the ultimate mysteries of "control" and what happened to the original Twilight.