After I Transformed into a Demon King, I Just Wanted to Die.

The ancestor of the Demon Sect, the Seven Night Demon Lord, entered the Bichi Palace to avenge his apprentice. The Saint of Bichi Palace knew that she was no match, so she seduced the Demon Lord and attacked her secretly. The Demon King died, and the modern young man Qi Ye came through and was shocked when he saw the beauty in his arms. The saint was also shocked because her ultimate move failed to kill her. At this time, the protagonist receives a system task. As long as he is killed, he can return to the original world and receive rewards. The conditions are that you cannot expose the system, you cannot commit suicide, and you cannot actively ask the other party to kill you. In order to complete the system task, the protagonist returns to the real world and embarks on a ridiculous path to death.