The situation you mentioned might be that the anime plot deeply touched your heart and caused you to have a strong emotional reaction. This kind of emotional reaction may be because the characters, plots, emotions, and other factors in the anime are similar to your own life experience or emotional experience, triggering your resonance and emotional reaction. In addition, anime may also have a profound impact on your psychology and emotions through image, music, language, and many other aspects. The storyline and character creation in the anime may stimulate your imagination and self-esteem, or make you feel certain emotions such as love, fear, loss, etc. These emotions may affect your emotions and behavior. In short, it's normal to feel heartache and emotional reactions after watching an anime. This may be because you have resonated with the plot and characters or have been affected by some emotions in the anime. If you feel unwell or need more help, it is recommended to communicate with friends, family, or a psychiatrist for more support and help.