There were many animes that used love as the main line and reasoning as the secondary line, such as: 1. Your Name. (Your Name): A romantic animated film that tells the love story between two young people and also contains some reasoning elements. 2 Spirited Away: A fantasy animated film about a girl who finds herself in a mysterious world, which contains some elements of reasoning. 3 Death Note: A mystery anime tells the story of a talented high school student who discovers a notebook that can kill and tries to use it to achieve his goals. Love Asteroid: A romantic comedy about the love story between two young people and also contains some elements of reasoning. 5 "Steins;Gate": A sci-fi mystery anime that tells the love story between two young people and also contains some elements of relativity and time-travel reasoning. 6 "White Box": A mystery anime that tells the story of a courier company employee, which contains some elements of time and space reasoning. These are just some examples. There are many other animes that use love as the main line and reasoning as the secondary line. You can choose according to your preferences.