<P> In the live action drama, his role is expanded upon . Portrayed by Shugo Oshinari, Mikami is introduced as the prosecutor handling the case of Kyu Nishida, the murderer of Misa's parents . He eventually deduces Misa's identity as the second Kira after accumulating information from Kira - related news . After stealing Misa's notebook to become Kira in her place, Mikami collaborates with Light to kill L. Mikami continues to work with Light until they are both caught by Near and the police in the Yellow Box warehouse . Mikami accidentally kills Light after he sets the warehouse on fire in an attempt to escape . </P> <P> Mikami makes a cameo appearance in Death Note: Light Up the New World serving as the guardian to Light's young son, Hikari Yagami (夜 神 光, Yagami Hikari). He murders Hikari in order to steal the boy's notebook but is in turn killed by police officer Tsukuru Mishima . He is portrayed by Kensei Mikami in the film . </P> <P> Soichiro Yagami (夜 神 総一郎, Yagami Sōichirō) is Light's father and a police officer that initially leads the Kira investigation team that later joins with L. He is voiced by Naoya Uchida in the Japanese anime and Chris Britton in the English dub . When L begins to suspect Light of being Kira, Soichiro is unwilling to believe his son would be capable of such a thing . After L's death, he is sent to retrieve the Death Note stolen by Mello by obtaining Shinigami Eyes and infiltrate Mello's hideout, though Light had planned for Matsuda to fill the role . He retrieves the note and learns Mello's real name, but is unable to kill him, and is instead fatally wounded . Because Light has given up his Death Note, making his lifespan visible above his head, Soichiro dies believing that Light is not Kira . In the film series, Soichiro, portrayed by Takeshi Kaga, survives - discovering that Light is Kira and holding him as he dies - but chooses to hide the knowledge from his family . </P> <P> However, in the live - action drama, Soichiro, portrayed by Yutaka Matsushige, differs greatly from his other counterparts . Although his strong sense of justice and love for his family remain much the same, he is a widower, and Light feels some resentment towards him for choosing to interrogate murderer Kurou Otoharada over going to his wife's bedside when she passed, as well as his repeated absence in his son's life following that event . Yet despite this strain, the pair are much closer than other versions, and their relationship has a huge impact on the story, with Light killing Otoharada and ultimately becoming Kira in order to protect his father . It is this closeness that causes Soichiro to notice changes in Light's behaviour, and - in a huge departure from the source material - leads him to suspect his son when L suggests the possibility . This ultimately leads to a confrontation between the two towards the end of the series, in which Soichiro, blaming himself and having instructed his colleagues to assume Light's guilt if he should die, writes his own name in the Death Note before trying to burn it as his final act . </P>

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