Reborn as the Candle Dragon, I became the strongest academy guardian beast.

[The author has actually seen dragons; this isn't just random writing!]
Reborn as a black snake with the bloodline of the Candle Dragon, Su Chen activated the "Strongest Guardian Beast in History" system.
You start by being bound to the Azure Dragon Academy, and with investment, you can evolve indefinitely.
Investing in Lin Fan, the chosen one of destiny, his F-rank martial soul [Broken Spear] is upgraded to an SS-rank martial soul [Purple Lightning Spear]!
Invest in the future Empress Xu Liyue, and her F-rank martial soul [Sparrow] will be upgraded to an SSS-rank martial soul [Nirvana Phoenix]!
Investing in the immortal Chu Yunfeng, he awakens the SSS-level martial soul [Undying Black Coffin] and the SSS-level martial soul [Forbidden Codex]!
……
Years later, the students of Qinglong Academy left Blue Star, stepped into the starry sky, and brutally defeated the prodigies of the heavens.
Among the countless powerful figures in the starry sky, not one dared to oppose the Azure Dragon Academy.
It's simply because the guardian beast of Azure Dragon Academy is just too powerful!
When the eyes are open, it is daytime; all things come to life.
When you close your eyes, it is night; when all things perish.
He is Zhulong!