Ky Kiske is the deuteragonist of the Guilty Gear series and Sol Badguy's rival. A former member of the Sacred Order of Holy Knights during the Crusades, Ky is a charismatic swordsman who possesses a strong sense of justice and piety, which sustain and guide him through all manner of shaking uncertainties.

Ky is a religious man, the adjective describing both his devotion to God, as well as his commitment to the ideals of justice, order, and honor. Of a straightforward and serious personality, Ky is kind-hearted, charismatic, honest, diligent, polite, and believes in fair play. He is also chivalrous, being known to hold back against female opponents, and is utterly dedicated to protecting the weak.


Mahiro Oyama was just a normal erotic-game loving dude…until he woke up one morning as a woman! Turns out his mad-scientist little sister, Mihari, tried out one of her new experiments on him…with a disastrous outcome, as far as Mahiro’s concerned! But Mihari is as determined to study him as he is determined to go back to his shut-in, game-playing life, and one thing’s for sure…life is going to get a whole lot weirder from here on out! 
 
(Source: Kodansha USA)

Sin Kiske, the forbidden child of a human and a magically crafted biological weapon called a Gear, lives in a world where magic has replaced science, and scars from the Gear rebellion remain. Attending his parents’ taboo-breaking wedding, he encounters a mysterious girl with deep hatred for Gears, and their fateful meeting threatens to upend the world once again. 
(Source: Crunchyroll)

Initially unveiled at EVO 2022, a music video to commemorate the 1st Anniversary of "GUILTY GEAR -STRIVE-", animated by studio SANZIGEN. The video, directed by Shinpei Ishikawa, features the theme song Find Your One Way of the main character of the series: Sol Badguy. This music video depicts more than 20 years of the world of Guilty Gear and half his lifetime!
 
(Source: Arc System Works Twitter, edited)

Set in the year between the events of the first two games, the story revolves around two new characters exclusive to the manga: Tyr and Mizuha, and the mystery of severed Gear parts falling from the sky.  Members of the Post War Administration Bureau (P.W.A.B. for short) - the secretive organization responsible for many events in the games - serve as the antagonists of the story.  Characters from the games, such as Sol, Ky, Axl, Potemkin and Kliff, also appear, albeit with relatively minor roles.