In Nichiren Buddhism, the concept of impermanence is central to understanding the nature of existence and the path to liberation. This concept is rooted in the teachings of the Lotus Sutra, which is considered the ultimate and most profound teaching of the Buddha.

Nichiren Buddhism teaches that all things in life are impermanent, constantly changing and in a state of flux. This includes our physical bodies, our thoughts and emotions, and all phenomena in the world. This impermanence is seen as the root cause of suffering and dissatisfaction in life.

According to Nichiren Buddhism, the root of this impermanence lies in the three poisons of greed, anger, and ignorance. These poisons create a cycle of suffering and attachment, as we cling to things that are constantly changing and ultimately cannot bring us true happiness.

However, Nichiren Buddhism also teaches that impermanence is not something to be feared or avoided. Instead, it is a reminder of the ever-changing nature of life and the importance of living in the present moment. By accepting impermanence and embracing the present, we can let go of attachments and find true peace and happiness.

One of the key practices in Nichiren Buddhism is chanting the mantra "Nam-myoho-renge-kyo," which is seen as a direct expression of the Lotus Sutra. Through this practice, practitioners are able to tap into the eternal and unchanging truth of the Lotus Sutra, which transcends the impermanence of the physical world.

Additionally, Nichiren Buddhism teaches the concept of "ichinen sanzen," which means "three thousand realms in a single moment of life." This concept recognizes that within each moment, there are infinite possibilities and potential for change. By understanding this, practitioners can cultivate a sense of hope and empowerment, knowing that they have the power to change their lives and create a better future.

In summary, Nichiren Buddhism views impermanence as an essential aspect of existence and a reminder of the ever-changing nature of life. By embracing this concept and utilizing the teachings and practices of the Lotus Sutra, practitioners can overcome suffering and find true liberation.