Defense
Defense is a 3★ Light Cone for the Path of Preservation in Honkai: Star Rail.
As a 3-star cone that simply restores 18% Max HP on Ultimate use, it offers an easy-to-farm but fairly basic sustain effect that is quickly outclassed by higher-rarity survival Light Cones.
When the wearer unleashes their Ultimate, they restore HP by 18% of their Max HP.
A drop of strength condensed from time itself. All the seemingly insignificant moments come together to form the magnificent choir of fate. "If you ever doubt these walls will lead us to victory, just look at these brave souls standing atop them."
How to read this Light Cone page
Every Light Cone has exactly one passive effect tied to the wielder's combat performance; that effect scales up as you Superimpose it from S1 to S5 — use the S1-S5 buttons above to see the exact numbers at each level instead of guessing or interpolating. A Light Cone only delivers its full value on a character who shares its Path; "Characters who use this cone" lists every character on that Path, while "Best users" is a narrower list pulled from real build consensus, not a guess.
Base stats (HP/ATK/DEF) are shown at Lv80 for every cone of the same rarity so they can be compared directly; a 5-star cone will always edge out 4-star and 3-star ones here — the real difference lives in the passive effect, not the flat stats. The "Alternative cones on the same Path" section suggests a few other options if you do not own the signature cone yet, or want to compare before spending ascension materials.
See the full list on the Light Cones page, or check terms in the HSR Glossary.