Kurogane Hiroto is in HighSchool, where he is academically the top of his class but literally the worst in physical activity. Born with a weak body, he has no endurance, speed nor strength and Hiroto wants nothing more than to be a hero. Fate teases him by giving him [[HyperAwareness phenomenal eye sight]], which allows him to see well beyond anyone else in sports, but his body is not able to react to any of it. He learns from his friend Tsubame Shiratori, who wants to recruit him for their school's UsefulNotes/{{Kendo}} team, about a rumor about a ghost named Tojo Sayuri, who wields a katana and haunts an ally in the city. Half curious, Hiroto goes there only to find that the ghost is real and that [[SpiritAdvisor Tojo Sayuri has been looking for a successor]] to her [[FantasticFightingStyle Sakura sword style]] for 150 years. Sayuri chooses him as the successor after he is able to dodge her attack and forces him to learn the Sakura style. Even with the help of the ancient swordsman ghost, Hiroto has to overcome his poor motor skills in order to be the hero he always wanted to be.

A 2011 UsefulNotes/{{Kendo}} based [[GamingAndSportsAnimeAndManga sports]] {{Manga}} by IKEZAWA Haruto, it appeared in the ''Weekly Magazine/ShonenJump'' magazine until 2013.

Not to be confused with [[Manga/{{Kurogane}} the 1996-1997 manga of the same name]].

!!This series provides examples of:

* AcademyOfEvil: Rakuyou High Kendo team reek of it.
* AttemptedRape: Chapter 0 has Kurogane rescue Tsubame from a trio who are trying to rape her. The rewrite in the Chapter 1 changes it to them robbing her instead (though the goon's leader does try to coerce her into having sex with him).
* AwesomenessByAnalysis: Hiroto due to his eyes, along with Yodaka Taizan and Morikuni Mujin both display similar recognition in how to counter other opponents styles.
* BatmanGambit: Happens often within the matches.
* BerserkButton: For Shidou insulting UsefulNotes/{{Kendo}} is not the best way to get his attention.
* CounterAttack: What Hiroto's main fighting style centers around.
* CuteSportsClubManager: Tsubame Shiratori for Ouka High, Nanami Yodaka for Hakurei High and Kaede for Rakuyou High
* DavidVersusGoliath: The first tournament arc of the manga has the Ouka Kendo team set to go against the acclaimed Hakurei High Kendo team in a exhibition match. [[spoiler: It averts the trope in that Ouka loses in the final set with Hiroto falling to their strongest Kendo practitioner, who also shares Hiroto's HyperAwareness vision. ]]
* DefeatMeansFriendship: How Shidou wound up becoming Hiroto's friend and even joining the Kendo club.
* [[spoiler:DistantFinale:]] [[spoiler:The manga ends without showing the rest of the matches of their first major rank tournament. However it reveals in their second years, Hiroto, Shidou and Aoharu lead Ouka to defeat Yadaka and Hakurei and win in that tournament, all three gaining national fame as Aces. Tsubame confesses to Hiroto and Sayuri is also still around in a new doll body because she refuses to acknowledge Hiroto and such gets to stay instead of passing on.]]
* TheDreaded: Tsurugi Kamiya, despite the Ouka Kendo club reputation of being losers, he is one of the top Kendo practitioners in [[TokyoIsTheCenterOfTheUniverse Tokyo]].
* {{Fanservice}} Tsubame and adult/ghost Sayuri.
* FriendlyRivalry: Oogami seems to want to develop this with everyone especially the first year Ouka kendo members like Hiroto.
* HandicappedBadass: Hazakura Shidou, can only use one arm when performing kendo but is still one of the strongest fighters in the series.
* HardWorkHardlyWorks: Subverted in Aoharu is one of the most physically gifted kendo club members but because he is still raw he doesn't always wins.
** Averted in Hiroto's early fights. While he was able to win with Sayuri's help and his eyes, he lost some of his first fights alone due to the difference in training and experience between him and his opponents.
* NotSoStoic: [[JapaneseDelinquents Morikuni]] [[MrExposition Mujin]] in chapter 47.
** Teammate [[AxCrazy Bashou]] [[SlasherSmile Haizaki]] says that [[DeathGlare Mujin would have killed 2 or 3 people if not for his mask]].
* OurGhostsAreDifferent: Tojo Sayuri
* PoorCommunicationKills: [[spoiler:How Sayuri died. She instilled such ToughLove to strengthen the student she chose to be her successor that he thought he was TheUnfavourite and when trying to runaway accidentally set up the fire that destroyed their dojo and killed Sayuri when she went back in to save him.]]
* PowerLimiter: Hiroto's glasses keep his [[HyperAwareness vision]] from over straining him with too much information during daily life.
* PowersViaPossession: Sayuri initially in some of Hiroto's first few fights outside of competition possessed him in order to allow him enough knowledge of how to fight in order win.
** She also possesses a doll which causes many people, outside of Hiroto and his family, to believe she is actually small child.
* SexyMentor: Sayuri in her adult ghost form.
* TheSmurfettePrinciple: Played straight at first with Tsubame Shiratori being introduced as a member and recruiter for Ouka's kendo team but being the only female shown. It isn't until later that other female members are actually introduced.
* ShutUpHannibal: Shidou delivers one to an opponent named Banda during a tournament, who made the mistakes of first underestimating his skills and more grievously [[BerserkButton insulting kendo]].
* TournamentArc: Given it is about UsefulNotes/{{Kendo}} this is a given and happens nearly all the time.
* TrainingFromHell: The coach's special training involves continuous kendo matches, without food or sleep, until everyone had scored 10,000 points.
* {{Troll}}: Sayuri. She loves to tease others, especially Hirotu.
* UnskilledButStrong: Ebana Aoharu, never bothered to learn the basics of kendo before joining the club but is physically gifted.
* VitriolicBestBuds: Shidou and Aoharu
* WeakButSkilled: Hiroto has very little stamina compared to other kendo practitioners but thanks to his eyes an Sayuri's training he is better within two weeks then he has any right to be for someone that never practiced Kendo before.
** [[BadassNormal Kamiya]] also started out as such even had the coach go out of his way to tell him he had "No talent" at kendo... until [[IGotBigger puberty kicked in]] which combined [[TookALevelInBadass more power with his basic skills making him who is today]].