The power to possess massive levels of life energy.
Immense/Vast Life-Force/Spiritual Power
Massive/Maximum Life-Force/Spiritual Power
User possesses massive reserves of life energy, which also acts as a reliable power source that aids their longevity, power, stamina, and vitality, allowing them to withstand and survive even the most strenuous and life threatening circumstances.
Users of Spirit, Demon, and Sacred Energy (YuYu Hakusho)
Asura (Asura's Wrath) possesses the Mantra affinity of Wrath, allowing him to increase his Mantra output the more rage he builds up. However, this tends to put a massive strain on his body.
Ichigo Kurosaki (Bleach) has been noted to have tremendously vast levels of Reiryoku, well beyond most other Shinigami.
Goku (Dragon Ball series) possesses an incredible reserve of ki energy, which can be augmented by his Kaio-ken technique and various Super Saiyan transformations.
Being an Uzumaki and a reincarnation of Asura Ōtsutsuki, Naruto Uzumaki (Naruto series) possesses massive reserves of strong chakra, which was increased even further when he recieved chakra from the other tailed beasts and Hagoromo Ōtsutsuki
As a reincarnation of Indra Ōtsutsuki , Sasuke Uchiha (Naruto series) possesses immense reserves of chakra. In the beginning they were large enough to use Chidori twice a day without aid. As he is grew older and more powerful he became able to use the Chidori as well as its variation with no given limit.
Kaguya Ōtsutsuki (Naruto) possesses even bigger chakra reserves than the Ten-Tails, whose own chakra reserves were specifically described as immeasurable.
Yusuke Urameshi (YuYu Hakusho) possesses vasts amounts of Spirit Energy. When he intergrated Genkai's Spirit Wave Orb in his body, his reserves and power increased expotentially.