Seibei’s heartbeat became faster due to an emotional or psychological trigger that caused a strong physical reaction. In literature, when a character experiences heightened emotions such as fear, excitement, anxiety, or stress, these feelings can manifest as physical symptoms, such as an increased heart rate. Seibei’s faster heartbeat could be a direct response to a moment of intense personal conflict, fear, or anticipation.
For example, a sudden realization or an unexpected event might have caused Seibei to feel overwhelmed or anxious, resulting in an accelerated heartbeat. This reaction is often used in literature to signify a moment of emotional tension or to highlight the significance of a particular event in the narrative.
The physicality of a racing heartbeat also symbolizes how emotions can take over the body, making the internal experience more tangible to the reader. It creates a connection between Seibei’s inner turmoil and her physical state, reflecting the complexity of human emotions and how they are intertwined with the body’s responses.
In conclusion, Seibei’s faster heartbeat is a literary device used to convey emotional intensity and the profound impact that her psychological state has on her physical well-being. It serves to immerse the reader in the character's experience and emphasizes the emotional stakes of the moment.