 Kōsaku Sakamoto ( 坂本 耕作 , Sakamoto Kōsaku ) is the protagonist of Stop ! ! Hibari @-@ kun ! ! and is originally from Kumamoto.Ch. 33 He is a pure @-@ hearted high school student who constantly refuses Hibari 's advances toward him , Ch . 2 , 3 , 10 , 17 but as time goes on , he becomes increasingly concerned that he is being influenced by Hibari.Ch. 8 , 22 , 35 , 38 Kōsaku treats Hibari kindly , and helps to maintain Hibari 's secret.Ch. 25 , 50 , 51 Initially unskilled at fighting , Ch . 3 he joins the Wakaba Academy boxing club in an effort to get stronger because of Hibari 's inherent strength , Ch . 8 which he achieves as the series progresses.Ch. 38 Kōsaku is voiced by Tōru Furuya . 
 Kōsaku Sakamoto ( 坂本 耕作 , Sakamoto Kōsaku ) <a href='drop_aux' title='1'><mark>is</mark></a>the protagonist of Stop ! ! Hibari @-@ kun ! ! and <a href='drop_aux' title='2'><mark>is</mark></a>originally from Kumamoto.Ch. 33 He <a href='drop_aux' title='3'><mark>is</mark></a>a pure @-@ hearted high school student <a href='null_relcl' title='4'><mark>who</mark></a>constantly <a href='uninflect' title='5'><mark>refuses</mark></a> Hibari <a href='null_genetive' title='6'><mark>'s</mark></a>advances toward him , Ch . 2 , 3 , 10 , 17 but as time <a href='uninflect' title='7'><mark>goes</mark></a> on , he <a href='uninflect' title='8'><mark>becomes</mark></a> increasingly concerned that he is being influenced by Hibari.Ch. 8 , 22 , 35 , 38 Kōsaku treats Hibari kindly , and <a href='uninflect' title='9'><mark>helps</mark></a> to maintain Hibari <a href='null_genetive' title='10'><mark>'s</mark></a>secret.Ch. 25 , 50 , 51 Initially unskilled at fighting , Ch . 3 he <a href='uninflect' title='11'><mark>joins</mark></a> the Wakaba Academy boxing club in an effort to get stronger because of Hibari <a href='null_genetive' title='12'><mark>'s</mark></a>inherent strength , Ch . 8 which he <a href='uninflect' title='13'><mark>achieves</mark></a> as the series <a href='uninflect' title='14'><mark>progresses</mark></a>.Ch. 38 Kōsaku is voiced by Tōru Furuya . 
Kōsaku Sakamoto ( 坂本 耕作 , Sakamoto Kōsaku ) the protagonist of Stop ! ! Hibari @-@ kun ! ! and originally from Kumamoto.Ch. 33 He a pure @-@ hearted high skool student constantly refuse Hibari  advances toward em , Ch . 2 , 3 , 10 , 17 but as time go on , he become increasingly concerned dat he is being influenced by Hibari.Ch. 8 , 22 , 35 , 38 Kōsaku treats Hibari kindly , and help to maintain Hibari  secret.Ch. 25 , 50 , 51 Initially unskilled at fighting , Ch . 3 he join the Wakaba Academy boxing club in an effort to get stronger because of Hibari  inherent strength , Ch . 8 which he achieve as da series progress.Ch. 38 Kōsaku is voiced by Tōru Furuya .