The ability to possess an uncommonly potent soul and gain highly formidable abilities as a result of the soul's power.
User has a strong soul that is equivalent to the power of many souls which comes in handy in situations that tests one's spiritual fortitude and grants spiritual abilities. The user's soul is unable to be bound by anything and lives free without anything holding it back. It is also strengthened by the user's desire to get what they want, no matter the cost.
Though resistant, a user's soul can still be manipulated and even absorbed with enough effort
Ichigo Kurosaki (Bleach)
Some Shinigami (Bleach)
Sairaorg Bael (Highschool DxD)
Issei Hyoudou (Highschool DxD)
Senju Clan (Naruto)
Uzumaki Clan (Naruto)
Mifune (Soul Eater)
Yami Yugi (Yu-Gi-Oh!)
Jack Atlas (Yu-Gi-Oh 5Ds)
Lao G (One Piece)
Prometheus (One Piece)
Zeus (One Piece)
Napoleon (One Piece)
Charlotte Linlin (One Piece)
Jander Sunstar (Forgotten Realms)
Asura (Asura's Wrath)
Gabriel Belmont (Castlevania: Lord of Shadows)
Dante Alighieri (Dante's Inferno)
Furtive Pygmy (Dark Souls)
Gwyn, Lord of Sunlight (Dark Souls)
Gravelord Nito (Dark Souls)
The Witch of Izalith (Dark Souls)
Kratos (God of War)
Lord Souls (Dark Souls)
Strong Souls (Soul Eater)
Witch Souls (Soul Eater)
Asura (Asura's Wrath) has a strong enough soul to escape the depth of Naraka.
Dante Alighieri (Dante's Inferno) possessed a strong enough soul to defeat Death and traverse all nine circles of Hell to save his wife, Beatrice.
When the first flame was lit, the Furtive Pygmy (Dark Souls) obtained the Dark Soul, passing it down through its descendants as Humanity.
When the first flame was lit, Gwyn, Lord of Sunlight (Dark Souls) obtained the Lord Soul of Light, using such power to fight against the dragons and become a god to the new world.
When the first flame was lit, Gravelord Nito (Dark Souls) obtained the Lord Soul of Death, using such power to fight against the dragons and become a god to the new world.
When the first flame was lit, the Witch of Izalith (Dark Souls) obtained the Lord Soul of Life, using such power to fight against the dragons and become a god of the new world.
Kratos (God of War) has a powerful enough soul to escape the Underworld more than once.
Issei Hyoudou (Highschool DxD) possesses a will strong enough to keep him pushing towards his limits and is powered by his perverted mind.
Kazuma and Ryuho (s-CRY-ed) possess a strong, independent spirit, driven by their need live free without depending on anyone or anything. This in turn allowed them to gain control of their own destinies and aquire a great deal of Alter power.
Witch Souls (Soul Eater) are known to hold great power, making them a sought after prize to meister, weapon and kishin alike.
Prometheus, Zeus and Napoleon (One Piece) were created from Linlin's own soul, making them the strongest homies.