 Stop ! ! Hibari @-@ kun ! follows Kōsaku Sakamoto , a high school student whose mother tells him on her deathbed to live with her friend and yakuza boss Ibari Ōzora and his family in Tokyo after she dies . Although Kōsaku is initially unsure about his situation , he is relieved when he meets Ibari 's four children : Tsugumi , Tsubame , Hibari and Suzume . Kōsaku is attracted to Hibari from the start , but he is shocked to learn that Hibari , who looks and behaves as a girl , was assigned male at birth — something only known within the Ōzora Group and Hibari 's family . A group of four girls led by Kaori Hanazono begin to suspect that Hibari may be a guy , but Tsubame takes Hibari 's place during a health checkup , effectively quelling any suspicions . Hibari begins to show an immediate interest in Kōsaku , so in an effort to distance himself from Hibari , Kōsaku joins the Wakaba Academy boxing club . Also in the club is Makoto Shiina , who is attracted to Hibari , and Rie Kawai , the club manager who Kōsaku likes . Hibari soon joins the club as its second manager shortly before they go on a training camp in Kujūkuri at the end of the year . 
 Stop ! ! Hibari @-@ kun ! <a href='uninflect' title='1'><mark>follows</mark></a> Kōsaku Sakamoto , a high school student whose mother <a href='uninflect' title='2'><mark>tells</mark></a> him on her deathbed to live with her friend and yakuza boss Ibari Ōzora and his family in Tokyo after she <a href='uninflect' title='3'><mark>dies</mark></a> . Although Kōsaku <a href='drop_aux' title='4'><mark>is</mark></a>initially unsure about his situation , he is relieved when he <a href='uninflect' title='5'><mark>meets</mark></a> Ibari <a href='null_genetive' title='6'><mark>'s</mark></a>four children : Tsugumi , Tsubame , Hibari and Suzume . Kōsaku is attracted to Hibari from the start , but he <a href='drop_aux' title='7'><mark>is</mark></a>shocked to learn that Hibari , <a href='null_relcl' title='8'><mark>who</mark></a><a href='uninflect' title='9'><mark>looks</mark></a> and behaves as a girl , was assigned male at birth — something only known within the Ōzora Group and Hibari <a href='null_genetive' title='10'><mark>'s</mark></a>family . A group of four girls led by Kaori Hanazono begin to suspect that Hibari may be a guy , but Tsubame <a href='uninflect' title='11'><mark>takes</mark></a> Hibari <a href='null_genetive' title='12'><mark>'s</mark></a>place during a health checkup , effectively quelling any suspicions . Hibari <a href='uninflect' title='13'><mark>begins</mark></a> to show an immediate interest in Kōsaku , so in an effort to distance himself from Hibari , Kōsaku <a href='uninflect' title='14'><mark>joins</mark></a> the Wakaba Academy boxing club . Also in the club <a href='drop_aux' title='15'><mark>is</mark></a>Makoto Shiina , <a href='null_relcl' title='16'><mark>who</mark></a>is attracted to Hibari , and Rie Kawai , the club manager <a href='null_relcl' title='17'><mark>who</mark></a>Kōsaku <a href='uninflect' title='18'><mark>likes</mark></a> . Hibari soon <a href='uninflect' title='19'><mark>joins</mark></a> the club as its second manager shortly before they go on a training camp in Kujūkuri at the end of the year . 
Stop ! ! Hibari @-@ kun ! follow Kōsaku Sakamoto , a high school student whose mother tell him on her deathbed to live with her friend and yakuza boss Ibari Ōzora and his fam in Tokyo after she die . Although Kōsaku initially unsure about his shii , he is relieved when he meet Ibari  four children : Tsugumi , Tsubame , Hibari and Suzume . Kōsaku is attracted to Hibari from the start , but he shocked to learn dat Hibari , look and behaves as a girl , was assigned male at birth — something only known within da Ōzora Group and Hibari  family . A group of four girls led by Kaori Hanazono begin to suspect that Hibari may be a guy , but Tsubame take Hibari  place during a health checkup , effectively quelling any suspicions . Hibari begin to show an immediate interest in Kōsaku , soo in an effort to distance hisself from Hibari , Kōsaku join the Wakaba Academy boxing club . Also in tdaclub Makoto Shiina , is attracted to Hibari , and Rie Kawai , thdalub manager Kōsaku like . Hibari soon join the club as its second manager shortly before they go on a training camp in Kujūkuri at the end of the year .