Kazuhiko Yukimi  

, 雪見和彦

The character you are referring to is a 27-year-old ninja who serves as a squad leader on missions for the Kairōshū. He lives with Yoite, whom he cares for despite his deteriorating health. This ninja also frequently teams up with Raikō on missions. Although he tries to maintain a cool demeanor, he is known for having childish outbursts, typically directed at Raikō. Throughout the show, other shinobi criticize him for using a Glock 7 handgun as his primary weapon, which he responds to by saying that it's time to move on from the past. Despite this, he also employs more traditional shinobi weapons such as kunai and shurikens in certain situations. His background is not well-known, but it is believed that he and his sister lived in poverty before being adopted by the Kairōshū.