Collar of Bonding(Talon)

Collar of Bonding: When equipped voluntarily by another living creature

increases Relationship by +20, all stats by +5, and allows the owner of this item to sense the wearer's presence.

However, if the owner dies, the wearer also dies, and the wearer feels any pain that the owner feels.

Before equipping, anyone holding this item will be aware of its effects, and what happens if they fasten it.

Reference
Acquired in Chapter 15 "At Long Last, Some Rest"