Yunara vs Kai'Sa ADC Matchup
Yunara ADC wins 51.5% of 15,577 Low Elo games against Kai'Sa ADC, +1.6 points vs expected, 2-patch window 26.19-26.20.
Researched on LoL patch 26.20. Tips are written to hold at any rank; stats come from Low Elo ranked games up to patch 26.20.
Why Yunara is favored
Yunara can keep Kai'Sa at arm's length while controlling the wave: her 575 attack range exceeds Kai'Sa's 525, and her attacks spread while Cultivation of Spirit(Q) is active. That lets Yunara pressure Kai'Sa from outside her normal attack range and choose when to take a fight.
Measured in High Elo: Yunara wins 2.7pp more often than expected over 11,388 games.
How to play as Yunara
Use the range and waveclear advantage to pressure Kai'Sa as she approaches the wave, then back away before her support can create a close-range all-in.
Keep Untouchable Shadow(E) available during Transcend One's Self(R) if Kai'Sa marks you and looks for a dive; the transformed dash can create space after she lands.
Yunara's 575 attack range outranges Kai'Sa's 525, and her attacks spread to nearby units while Cultivation of Spirit(Q) is active, giving her more reach and wave control in lane.
Transcend One's Self(R) upgrades Kanmei's Steps(E) into a directional dash, giving Yunara a repositioning option when Kai'Sa commits to a dive.
How to play as Kai'Sa
Do not contest every push. Preserve health and farm until your support creates a clean all-in; Kai'Sa's short range makes extended trades on Yunara's terms difficult.
When Yunara's Transcend One's Self(R) is active, wait for her Untouchable Shadow(E) dash before committing Killer Instinct(R), so she has less room to escape your follow-up.
Icathian Rain(Q) can deal much more damage when its missiles focus an isolated target, giving Kai'Sa a burst window when she can separate Yunara from nearby units.
Sources
These notes come from r/kaisamains, checked against the champions' abilities.