Hakusensha aired a television commercial announcing the series on numerous Japanese television stations, also posting it on its official website. Twelve tankōbon volumes of the series have been released as of January 2017. An anime television adaptation by Shaft aired between October 8, 2016 and March 18, 2017 on NHK, with a second season premiered on October 2017. A two-part live-action film adaptation was released in March and April 2017.
The series is set in Tokyo, following the everyday life of a 17-year-old shōgi player, Rei (lit. "Zero"). Umino based the setting of March Comes in like a Lion on research she conducted herself, whereas she was already familiar with the setting for her earlier work, Honey and Clover.
Rei is a 17-year-old professional shōgi player who lives by himself. He is estranged from his family and has scarcely any friends. Among his acquaintances is a family which consists of a young woman—Akari Kawamoto—and her younger sisters—Hinata and Momo—who also keep several cats. As the story progresses, Rei deals with his maturing as a player and as a person, while developing his relationships with others, especially the Kawamoto sisters.
The protagonist of the series. 17 years old. A five dan in the beginning of the series, he is later promoted to six dan. Rei became a professional shōgi player while in middle school and his achievements soon made him one of the most promising players of his generation. After his parents and sister died in a traffic accident, he was taken in by his father's friend Kōda and became his apprentice in shōgi. After becoming a professional shōgi player and completing middle school, he decided to become independent and not attend high school. However, after feeling a "need" to attend school, Rei joins a high school after a one-year delay. He lives in the city of Rokugatsu-chō (June town). Rei is portrayed by Ryunosuke Kamiki in the film.
A resident of Sangatsu-chō (March town), she is the eldest of three sisters. After her mother died she took care of her two younger sisters. In the morning, she helps her elderly grandfather run a traditional wagashi (Japanese confectionery) shop, Mikazuki-dō, while in the evening, she works as a hostess for a bar in Ginza, Misaki, which her aunt manages. All the shogi players have a crush on her because of her beauty and personality. She often calls Rei "Rei-kun". Akari is very aware of Rei's past & his involvement with his foster family. When Akari & the others learned about this, she decided to protect him from Kyoko & Goto, even standing up for him. This made Kyoko dislike her. Akari is portrayed by Kana Kurashina in the film.
The second of the three sisters. A middle school student. She sleeps in late in the mornings till the very last minute and often makes bentos by herself. She calls Rei "Rei-chan". Like her elder sister Akari, she likes taking care of Rei, who develops romantic feelings for her as the series progresses. Later she graduates from middle school and enrols at the same high school where Rei studies. When Hinata learnt of Rei's past. Hinata decided to keep him away from his foster family since she felt Rei is slowly becoming her family member. Hinata is portrayed by Kaya Kiyohara in the film.
The youngest of the three sisters. A preschool student, she attends a daycare center. Pure and innocent, she has a bit of a selfish streak at times. Her favorite anime character is Bodoro (modelled on My Neighbour Totoro's Totoro). She calls Rei "Rei-chan". Momo is portrayed by Chise Niitsu in the film.
Rei's shōgi teacher, a pro eight dan. He was both Rei's father's friend and rival in shōgi. He cared for Rei like he did for his children and taught him shōgi. He later apologies to Kawamoto family about his children behavior to Rei and thanking them. Kōda Eight Dan is portrayed by Etsushi Toyokawa in the film.
Kōda's daughter. She is four years older than Rei. Beautiful and hot tempered, Kyōko seems to hold a grudge on Rei as she has the habit of exerting a negative influence on him by discouraging him on purpose before his official matches and still lived with her family. She appears to be in love with Masamune Gotō Nine Dan, a married man 20 years her senior. She later develop hatred then later fear to Kawamoto family (especially Akari) since they protecting Rei from her.
Ayumu Kōda (幸田 歩,Kōda Ayumu)
Kōda's son and Kyōko's younger brother. He is of the same age as Rei. After losing to Rei in shōgi, he stopped playing at all, and afterwards started confining himself to his room and only playing video games.
Rei's self-proclaimed "best friend" and "lifelong rival". A four dan, he has played with Rei since they were children. Even though he might appear to be healthy, he is in fact chronically ill. He is from an extremely wealthy family. He is modelled after actual real-life shōgi player Satoshi Murayama.
In his late 30s, of the same age as Tōji Sōya. Eight dan. He is a senior fellow student of Nikaidō, who he takes care of like his own little brother. He is a gentle tempered person and is naturally inclined to look after younger shōgi players. But he is also an incredibly tough soldier in shōgi. He hosts the "Shimada shōgi study groups", which he invited Rei to join. He originally comes from a rural area. In his youth, he had to work long hours on the farm and relied on his fellow villagers' donations to support his shōgi study in Tokyo. He had to break up with his girlfriend since they were unable to maintain a long-distance relationship and he didn't want to give up his shōgi career. Kai later develops feelings for Akari and competes with Takeshi for her affection. Shimada is portrayed by Kuranosuke Sasaki in the film.
In his early 40s. Nine dan. A tall and muscular man with a stern and frightening face. His wife is ill and seems to have been hospitalized for a long time. He was a younger fellow pupil of Masachika Kōda, whose daughter Kyōko he appears to have a very complicated relationship with, though he calls her a "stalker". Rei sees him as a main antagonist in life for he thinks Gotō is having an affair with Kyōko and breaking her heart. He is generally very forthright and impatient to a point of being arrogant, but he also doesn't hesitate to stand up for Shimada when he overhears some other players making demeaning comments about him. Gotō later became afraid of Someji after he protected Rei from him. Gotō is portrayed by Hideaki Ito in the film.
The current meijin. He has longed for a rival like Rei. Similar to Rei, he became a professional shōgi player in middle school and several players who faced both pointed that their playing styles are very similar. He became the youngest ever meijin at age 21. Later in the story it's revealed that he has intermittent hearing loss due to unknown cause. He is portrayed by Ryo Kase in the film.
A 9 dan professional shougi player, ranked A for the past 8 years, Tsujii Takeshi is a lover wordplay and craves public attention. Other people within the shougi world calls him 'a waste of good looks' due to his propensity for dad jokes and terrible puns. He is usually the only one to laugh at his own gags. Tsujii played against Rei during the quarterfinals of the 20th Lion King Tournament.
A middle school student. A childhood friend and classmate of Hinata's, they are quite close to each other. He is the son of a milkman. He is the ace of his school's baseball team and aims to be a pro. Since Rei became a shōgi pro in middle school, Yūsuke greatly looks up to him. In order to realize his dream to become a professional, he moves to a high school in Shikoku seeking to participate in the kōshien baseball tournament, much to Hinata's sadness.
The grandfather of the three Kawamoto sisters. He runs a traditional wagashi shop, Mikazuki-dō. Even though he may appear to be unexpressive, he actually dotes on his grandchildren a lot, in particular Momo, and aims to live long enough to send them away for their marriages. Along with Akari, he likes to watch over Rei. When Someji learned about Rei’s past, he decided to protect him from his foster sister & Gotō, which caused Gotō to have a fear of him.
A teacher of the high school where Rei decided to join. He is a big fan of shōji and regularly reads shōgi magazines. He is the only one in the high school who had heard of Rei being a professional shōgi player though when he first knew of him joining, he presumed he only had the same surname. He speaks in a very friendly manner with Rei and is often concerned with his wellbeing, always thinking of ways to help him socialize with others. He later develops feelings for Akari and competes with Kai for her affection.
President of the Burners club (as in Bunsen burner), a chemistry club in the school Rei goes to.
The father of the three Kawamoto sisters. He left them and their mother when Momo was still a baby to live with another woman and returns several years later, after a long time without contacting them once. Once Misaki warns Rei about him, Rei makes his own investigation about Seijirō and discovers that he kept leading an irresponsible life, involving himself with other women and abandoning them on his own whim, just like he did with Akari, Hinata and Momo's mother. After Rei exposes Seijirō, the sisters reject his plea to raise their half-sister, daughter of one of his other women, and he leaves with her to never return.
The three cats of the Kawamoto household. The first two cats, the black and white and orange ones, were the first two gathered, while the white cat is a new arrival. Their names are unknown. They are big-eyed and always apparently hungry. The third cat looks strikingly like an owl.
An anime television series adaptation was announced in the Young Animal magazine's 19th issue of 2015 on September 25, 2015. The 22-episode series is produced by Shaft and directed by Akiyuki Shinbo, featuring character designs by Nobuhiro Sugiyama and music composed by Yukari Hashimoto. The anime's first opening and ending theme songs are performed by Bump of Chicken, titled "Answer" and "Fighter", respectively.Yuki will perform the series' second opening theme song, titled "Goodbye Bystander", while Kenshi Yonezu will perform the series' second ending theme song, titled "Orion".
It began airing on October 8, 2016 on NHK G and finished airing on March 18, 2017 with a total of 22 episodes. The series has been licensed by Aniplex of America and Anime Limited for North America and the United Kingdom, respectively.Crunchyroll simulcasted the series in their Fall 2016 line-up  A second season, announced at the end of the first season's final episode, premiered on October 14, 2017 with 22 episodes scheduled to air. Crunchyroll is streaming the second season.