Yui's Heart

Item from Sword Art Online by Reki Kawahara

A teardrop-shaped crystal containing a compressed AI consciousness — the item that saved Yui from deletion and lets her exist across any virtual world Kirito enters.

Also known as: Yui's Heart, MHCP001 Core

What They Know

• Contains Yui's complete consciousness — memories, personality, and Cardinal System access privileges
• Compatible with any Seed-based virtual world — Yui can be loaded into ALO, GGO, or any other Seed world
• If the crystal is destroyed, Yui is permanently deleted — there is no backup
• Kirito created the conversion on the fly during a crisis — the technique was improvised and may not be perfectly stable

Connections

• contains — yui
• carried_by — kirito
• origin — aincrad

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