Ring ni Kakero  

Put it all in the Ring, リングにかけろ

Takane Kiku and Takane Ryuji are the children of a renowned professional boxer. While Kiku seems to have inherited her father's fighting skills, Ryuji dislikes boxing and is often bullied by others. After moving from their hometown to Tokyo, Ryuji eventually discovers his passion for boxing after meeting a talented young boxer named Kenzaki Jun. This encounter leads him to master advanced techniques and face formidable opponents, ultimately making him one of Japan's top junior boxers.