How many series does the game *** Miracle Nikki have?

There are four paper-folding Nuan Nuan games. The first one is called Nuan Nuan. I forgot its name and I have never played it. The second one is Nuan Nuan Traveling Around the World. The third one is Qi Nuan. The fourth one is Flash. Nuan, the main plot of Nuan Nuan's travels is that the heroine and her sister travel around the world to find their father. Qi Nuan is the story of Nuan Nuan being summoned to Miracle Continent to save the world. Flash Nuan is the prequel of Qi Nuan, which may be Nuan Nuan's failure to save Miracle Continent. ? And then traveled back to 680 years ago and changed? The answers to these questions may not be available until Shining Nuan Nuan joins the show