There were many animes similar to Guarding Sweetheart that could be referred to as follows: 1. Puella Magi Madoka Magica: The story of the adventures of the young girl Akame Magi and her companions who used magic to become magical girls is one of the representative works of magical girls. "Even a chuunibyou needs to fall in love!" (Myself; Yourself): It was a very interesting story about Liu Ke, a teenager with chuunibyou disease, and his friends who were searching for love and self-recognition. 3. My Neighbor Totoro: It was a heartwarming and touching story about a pair of neighbors, their relationship, and their adventures of helping each other. 4. Tokyo Kitty (Tokyo Kitty): The story of two cute cats using magic to transform into women and adventure with other cats is another classic work of magical girls. The Vampire Knight (Cross and the Vampire) tells the story of a vampire and another vampire, as well as their friendship and love with other characters. The anime recommended above are all about magical girls or vampires. If you like these kinds of topics, you can give them priority. Of course, in addition to the recommended anime, there are many other excellent animes to choose from. I hope you can choose according to your preferences.