Hakuro no Mai
Deals burn damage every second to up to 2 enemies in a fan-shaped area. Reduces their movement speed for a short duration.

Standard Rider hero (King of Fighters crossover) built around a burning damage-over-time rage skill, slow effects and strong Rider mobility/Attack scaling.
Mai Shiranui is a Standard Rider hero built around a fan-shaped burn effect that both deals repeated damage and slows enemies, paired with passives that reward hitting slowed targets and boost Rider Troop Attack, HP and movement speed. Her final passive grants a strong movement-speed burst upon leaving combat while her troop is still largely intact.
Her awakening upgrades that mobility passive directly, increasing both the Attack bonus and the post-combat speed burst, making her a strong pick for Rider-focused formations that value both sustained pressure and repositioning speed.
As a Rider Troop hero, her class trait (Shiranui-ryuu Ninjutsu) increases damage dealt to Ranged Troops by 5%, but increases damage taken from Infantry Troops by 3% - the standard Rider troop-type matchup.
Deals burn damage every second to up to 2 enemies in a fan-shaped area. Reduces their movement speed for a short duration.
Increases Rider Troop HP. Increases basic-attack damage dealt to slowed targets.
Increases Rider Troop Attack and Rider Troop movement speed.
Increases Rider Troop Attack. Upon leaving combat, increases Rider Troop movement speed for a few seconds, provided remaining troop size is above a threshold.
Upgrades Musasabi no Mai. Before activation, the passive increases Rider Troop Attack by 20%, and upon leaving combat with over 50% troop size remaining, increases Rider Troop movement speed by 30% for 5 seconds.
After activation, the Attack increase rises to 30%, and the post-combat movement speed bonus rises to 45% for 5 seconds.
Houou no Mai
Houou no Mai upgrades Mai's passive, Musasabi no Mai, directly. Before awakening, that passive increases Rider Troop Attack by 20%; upon leaving combat, it increases Rider Troop movement speed by 30% for 5 seconds, provided remaining troop size is above 50%.
After awakening, the Attack increase rises to 30%, and the post-combat movement speed bonus rises to 45% for 5 seconds under the same condition.

A mysterious and beautiful ninja has arrived at the sanctuary. With her fiery combat techniques and blazing red outfit, she has become a magnificent sight in this post-apocalyptic world. Mai Shiranui, successor of the Shiranui-style ninja arts, has devoted her life to rigorous ninja training since childhood and is known for her unique fighting style. Her name "Mai" means "dance," and she embodies it, moving as gracefully as a dancing butterfly while delivering strikes as lethal as a bee. Her signature weapons, a pair of fans, are used both for defense and to unleash blazing flames through ninja arts. Besides her striking ninja attire, Mai Shiranui's combat skills are equally impressive - after joining the competitive fighting scene, she took part with the Women Fighters Team in the renowned "THE KING OF FIGHTERS" tournament, showing her extraordinary abilities while competing for the title of champion. Even after the tournament, she remains devoted to refining her ninja arts and combat skills, and even in this Zombie-infested world she continues to travel in search of training and shelter, forging a passionate bond with the sanctuary.