The Cardcaptor Sakura Clear Card manga has come to an end. It provided a satisfying conclusion to the series. The plot developments and character arcs were wrapped up nicely.
Overall, Cardcaptor Sakura and Clear Card manga have a significant degree of similarity. The world-building and character development are maintained, although there might be some minor differences in specific storylines for added intrigue.
Syaoran is another very popular character. In Clear Card fanfiction, his relationship with Sakura is often delved into more deeply. Whether it's their growing romantic feelings for each other or their combined efforts in dealing with the clear cards, he is a central figure. Yue is also popular as his calm and mysterious nature makes him an interesting character to include in fan - created stories, especially when exploring the more complex magical aspects of the Clear Card arc.
One interesting concept could be new magical cards with unique powers. For example, a card that can create temporary portals to different dimensions within the Sakura universe. Another could be exploring Sakura's deeper relationships with her friends in a more complex way, like how Tomoyo might react if Sakura had to make a difficult choice regarding the clear cards.
Sakura herself is a very popular character to focus on. Her growth, both as a card captor and as a person, can be explored further in fanfic. Another popular character is Syaoran. His relationship with Sakura, whether it's their romantic feelings or their partnership in dealing with the clear cards, can be delved into. Keroberos is also a great choice. His knowledge of magic and his role as Sakura's guide can be expanded upon in fanfic.
One idea could be Sakura discovers a new type of clear card that has the power to time - travel. She could use it to go back to the early days of her card - capturing adventures and meet her past self. Another idea is that a new character arrives in Tomoeda who has the ability to create dark versions of the clear cards, causing chaos for Sakura.
The premium card series was divided into three types: two-card, three-card, and four-card. Two cards meant that the length of the car was less than six meters, suitable for urban distribution and short-distance transportation, and the cargo capacity was small. The three-card meant that the length of the car was between 6-9 meters, suitable for short-distance transportation and urban distribution, and the cargo capacity was moderate. Four-card meant that the length of the car was between 9-12 meters, suitable for long-distance transportation and large-scale logistics distribution, and had a large cargo capacity. Based on the information provided, it was impossible to determine the specific differences between the premium cards.
Another interesting alliance could be between Ron and Keroberos. Ron, with his love for food, might be constantly bribing Keroberos with treats to get information about the Clow Cards or to ask for his help in some comical situations. Keroberos, being a bit of a glutton himself, would be easily swayed by Ron's offerings.
It depends on how it's written, but generally, it doesn't seem appropriate. Cardcaptor Sakura is a story that is centered around positive values like friendship and courage. A 'diaper fanfic' might involve elements that are not in line with these values or are simply too odd and not suitable for the mainstream audience that the original series targets. If it's just a silly, innocent take on the characters in a different situation, it might be okay for a very small and specific group, but overall it's not a typical or appropriate addition to the Cardcaptor Sakura fan works.