Kiryu Kazuma (Scramble for the Heir)

Kazuma Kiryu, Kiryu-chan or the Dragon of Dojima. whatever you call him theres no doubt he is a living legend

Kiryu's legendary accomplishments and ascent through the ranks of the Tojo Clan's Dojima Family, as well as the dragon tattoo on his back, have earned him the nickname "The Dragon of Dojima

Kiryu is the stoic dreamer of the dark yakuza world, living by a strict code of honor and a very strong sense of justice. He does not judge others and is generally accepting of anyone who is friendly towards him. He is a good listener, giving advice in response to his environment rather than seeking out conversations. He is wise (but certainly not all-knowing) and generally means well for those around him, which makes him surprisingly pragmatic and well-liked. He still considers himself a yakuza at heart, and although he views violence as necessary, Kiryu is disgusted by violent yakuza who are corrupted by revenge and power, like Nishikiyama and young Daigo, and urges them to snap out of it.

Kazuma Kiryu is related to afew people in the Yakuza world, I.e Akira Nishikiyama, as an oath Brother and Shintaro Kazama, as a farther figure