All the messages from Kira I have conveyed to you in the past as well as everything I will tell you in the future will become the law of this world.
~ Kiyomi Takada.
Kiyomi Takada is a popular news anchor and an ex-girlfriend of Light's, as Kira's spokesperson. Under the pretense
Kiyomi Takada
of investigating her, Light set up meetings with her in hotel rooms monitored by bugs, but not cameras. They communicated by passing notes. He had Takada contact Mikami and send her a substantial number of pages from the notebook, keep his in a secure location, and carry a replica to fool Near, because his appearance on TV would put him under suspicion. At this point, Mello made an unexpected reappearance, and kidnapped Takada. She killed Mello with a piece of the notebook she had secreted on her person, after which Light made her kill herself. Unfortunately, Mikami visited his safe deposit box and wrote down Takada's name almost simultaneously. This tipped off Near's people, and they replaced his notebook with a fake.
           Death Note Villains

Light Yagami | Misa Amane | Ryuk | Teru Mikami | Kyosuke Higuchi | Yotsuba Group | Mello | Rem | Kiyomi Takada | Kurou Otoharada | Kiichiro Osoreda | Shinigami King

2017 Film
Light Turner | Mia Sutton | L | Ryuk | Kenny Doyle | Antony Skomal | James Brode

Beyond Birthday | Taro Kagami | Miura