The Women's Super League defending champions were able to maintain their winning ways at the King Power Stadium.
The Blues scored five goals in the first half.
Substitute Beth England headed home number seven.
Kirby added to the leaders' total.
After a clever link-up play with Kirby, the ball was slid into the bottom corner by Reiten for the first goal of the game.
Fleming got the first of four assists eight minutes later when she got the first of four assists.
The Blues scored three times in the final six minutes of the first half to take a commanding lead.
Kirby got in on the act with a nice outside-of-the-boot finish before Charles headed home.
Not to be left out, Kerr added a fifth. She was able to leave the Australian with an easy task, but her finish was always emphatic.
Fleming added insult to injury five minutes after the break. She dispatched with confidence because of the weak clearance from Purfield.
After their introduction, Alsu Abdullina and England came together to head home a seventh fifteen minutes from time.
There was still time for Kirby to get home.
The result is not surprising. Willie Kirk's team came into this game with no points from their first eight games.
The champion knew they needed a victory to stay there after Manchester United's win.
Even though they couldn't match or surpass their numerical dominance from their last visit to the King Power, they still dominated here.
In the first half, her ball for Kerr was particularly eye-catching as she enjoyed a record-equalling four assists in the WSL.
The difference in quality was so great that almost everyone had their moment in the sun.
The season will not be defined by games like this as they are four points adrift of Reading.