Sam can travel to the immortal lands because he possesses a special amulet that grants him access to that realm. The amulet acts as a key, allowing only those chosen individuals to enter the immortal lands. Sam's pure heart and noble intentions also play a role in his ability to journey to the immortal lands, as only those with good intentions are permitted to enter. **

Kaido is often referred to as "indestructible" or "invincible" due to his incredible durability and ability to withstand massive amounts of damage. However, it has not been explicitly stated that he is immortal. While he has survived numerous deadly situations and attempts on his life, it is unclear if he is truly immortal or if there are any weaknesses or limitations to his durability. The extent of his immortality, if any, has not been fully explored in the series. **

The question of whether consciousness is immortal is a complex and philosophical one. Many belief systems and spiritual traditions posit the idea of an immortal consciousness or soul that transcends physical death. However, from a scientific and empirical perspective, there is currently no evidence to support the idea of an immortal consciousness. The nature of consciousness and its relationship to the physical body and brain is still not fully understood, and therefore the question of its immortality remains a matter of belief and speculation rather than scientific fact. **

As of now, there is no scientific evidence to support the idea that humans are immortal. While advancements in medical technology and understanding of aging may extend human lifespan, there is no indication that immortality is achievable. The human body is subject to aging, disease, and eventual death, making immortality unlikely. Additionally, the concept of immortality is often considered a philosophical or spiritual question, and beliefs about the afterlife or existence beyond the physical body vary among different cultures and religions. **

Nezuko from the anime Demon Slayer: Kimetsu no Yaiba is not immortal, but she does possess some supernatural abilities due to being turned into a demon. While she does not age and has rapid regenerative abilities, she can still be killed by a demon slayer using specific techniques and weapons. Additionally, her brother Tanjiro is on a quest to find a cure for her demon condition, which suggests that she is not truly immortal. **

No, trees are not immortal. While some trees can live for thousands of years, eventually they will die. Factors such as disease, environmental changes, and human intervention can all contribute to the eventual death of a tree. However, some species of trees have incredibly long lifespans and can live for many centuries. **

No, Nanno is not immortal. Nanno is a fictional character from the Thai television series "Girl from Nowhere." While she possesses supernatural abilities and seems to have an otherworldly presence, there is no indication in the show that she is immortal. Nanno's character is shrouded in mystery, and her origins and true nature are never fully explained, adding to her enigmatic and intriguing persona. **

In many fantasy stories and mythologies, elves are often depicted as immortal or having extremely long lifespans. They are usually portrayed as living for hundreds or even thousands of years. However, the concept of immortality for elves can vary depending on the specific lore or world they are a part of. Overall, elves are commonly associated with longevity and a connection to nature that allows them to live much longer than humans. **