Japanese anime works had a rich variety of topics. Here are some of the more common topics: 1. Romance comedy: This type of work usually focuses on romance and comedy. The love story between the protagonists is the main theme. 2. Adventure fantasy: This type of work usually uses fantasy and adventure as the main plot. The protagonist uses adventure to solve various problems, and at the same time, there are many funny and touching plots. 3. Science fiction: This type of work usually uses science fiction as the main plot. The protagonist uses technology to solve various problems, and at the same time, there are many funny and touching plots. 4. Action: This type of work usually takes action as the main plot. The battle scenes between the protagonists are very exciting, but there are also many funny and touching plots. 5. History: This type of work usually uses history as the main plot. The protagonist uses historical events to solve various problems, and at the same time, many funny and touching plots occur. 6. Cure: This type of work usually has a warm and touching plot. The protagonist finally obtains happiness and growth through various difficulties. These are just some of the common topics in Japanese anime. There are many other types of topics such as politics, sports, entertainment, and so on.