|Portrayed by:||Julia Kato|
|Only Appearance:||Day of the Samurai|
|Appears in:||1 Episodes|
As a young woman, Kairi trained under Yoru, who considered her like a daughter to him. She was later kidnapped by Kyodai Ken, who held her for ransom, demanding that Yoru give up the location of a scroll containing the technique for a lost and deadly fighting art, which he believed would enable him to defeat Batman.
During the exchange, Kyodai created a diversion by kicking Kairi off a building, but Batman saved her, allowing Kyodai to get away with the map. Kairi had never seen this mysterious man before, and as he swung away, she whispered in wonder, "Spirit of the Bat...".