Immortal Respects Life and Gets Slapped in the Face

The most powerful demon in the immortal world, the Blood Demon Emperor, failed to survive the tribulation and was reborn as a senior in high school. He discovered that the earth was actually a sealed cage of the end of the law. In order to return to the top, he had to use the means of cultivating immortals to cope with the college entrance examination and business suppression, but unexpectedly discovered that this world hides the secret that connects all the worlds.