- Soul Brotherhood/Sisterhood
- Spirit Brotherhood/Sisterhood
- Spiritual Connection
- The Soul Brother/Sister
- The Spirit Brother/Sister
User possesses a link to somebody/something through their soul, which allows them to know each other's locations, share in other power(s) or other capabilities.
- May be irreversible.
- Corruptions, defects or imperfections of one's souls may carry onto the other.
- Death of one or more of the users may sever the link.
- Death of one or more of the users may result in the death of all of the users.
- Lorian, Elder Prince and Lothric, Younger Prince (Dark Souls III); via Soul of the Twin Princes
- Harry Potter (Harry Potter); as Tom Riddle's pseudo-Horcrux
- Herpo the Foul (Harry Potter); via his Horcrux
- Quirinus Quirrell (Harry Potter); as Tom Riddle's temporary host
- Tom Riddle/Lord Voldemort (Harry Potter); with his Horcruxes
- Nagini (Harry Potter); as Tom Riddle's Horcrux
- Weapon and Meister Partners (Soul Eater); via Soul Resonance
- Snow and Koyuki (Marchen Awakens Romance)
- Oswald Mandus (Amnesia: A Machine for Pigs); with The Machine
- Kogon Founders Daughter (Shikabane Hime)
- Charlotte Linlin (One Piece); via Soru Soru no Mi
- Horcruxes (Harry Potter)