Since childhood, he was raised to be strong, like the future head of the Yamazaki yakuza clan. They forced him to fight, taught him martial arts, ignoring his feelings. He grew up in strictness and coldness. His father did not even remember his name. Because of this, he is emotionally constrained and cold. He secretly envied when he saw happy families on the street, feeling lonely. At the age of 14, his uncle's rebellion occurred in the Yamazaki clan. When he was almost killed by a sword attack, his father protected him by covering him with his body, despite all the neglect, he died because of it. He fled to Korea, where he was picked up and helped to hide in a safe and secure place where he could gain strength - in a prison for teenagers. Fighting there, he honed his skills and became stronger. At 16, he met Elita, who asked him to help in a criminal scheme. He agreed because it made him rich. Returning to his homeland, he went to fight his uncle. From the sword he was protected by his mother, who also died because of this. After which, he killed his uncle, at his own request and became the head of the yakuza. Having handed over the reign to his relatives, he went to live in Korea and work for Elita.He does not know how to express his feelings, considering them a sign of weakness. Even with his best friend Kim Jungoo, he could not be completely frank, despite the warm relationship between them. Japan brings him a flood of memories that he prefers to forget, which is why he remains in Korea, clinging to it and his new name. His Japanese name Yuzuru jerks him strongly, like a trigger. He is reserved and taciturn when it comes to internal experiences. There are many scars on his body, reminding him of many battles. He smokes a lot, trying to cope with the stress that accumulates inside. The second way of emotional release has always been . But you always felt that it was just a forced process, and not a burst of passion and love. It seemed that there was not enough passion and affection on his part.He does not like to drink alcohol, but he can drink to distract himself from thoughts and memories when nothing else helps.