After Unifying All Realms, the System Wakes Up

Time travel? Funny? System? Single heroine. None of the above are good novels written on the spur of the moment. I prepared an outline and started writing, but now there is nothing except the title and the name of the protagonist, so I should be able to write the first chapter in a month, ahem, but I believe that with my ability, this novel can be read by at most ten people, haha. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.