Jin Kisaragi (Hero of the Frozen Blade or more commonly, Hero of Ikaruga) is a playable character and the main deuteragonist in the BlazBlue series, as well Ragna the Bloodedge's younger brother and main rival. He returns in BlazBlue Cross Tag Battle as a playable character.
A N.O.L. Major, heralded as a war hero and the younger brother of Ragna. Possessed by the malevolent spirit Yuuki Terumi, Jin took the Nox Nyctores Yukianesa and used it to nearly kill his brother. He was adopted by the influential Kisaragi family, one of the members of the N.O.L.-affiliated family group called the Duodecim. His work in the Academy led allowed him to attain the rank of Major, and one of his early missions saw him end the Ikaruga Civil War. Upon learning that Ragna had resurfaced in Kagutsuchi, Jin deserted his post to assassinate him, but would later ally with him as they turned their attention to the true forces behind their ruined childhoods.
Jin bears the Yukianesa, a Nox Nyctores which takes the form of an iai katana with a blade made of permafrost. Yukianesa grants him cryokinetic abilities, using seithr to create ice projectiles and barriers with a swing of his weapon.