Hikaru Kamiki

"Ruby Hoshino, you have grown into a beautiful woman. Of course she would, since she's our kid."

- Hikaru Kamiki

Hikaru Kamiki (神木 ひかる) is the primary antagonist of the Oshi no Ko manga series. He is the man that fathered Aquamarine Hoshino and Ruby Hoshino with Ai Hoshino and the person implied to have leaked Ai's address to a disgruntled fan, leading to her death and prompting his son to devote his life to tracking him down and getting revenge.

It is later revealed that he also had an affair with actress Airi Himekawa, resulting in the birth of Taiki Himekawa, and he is implied to have masterminded her murder as well by telling her husband about their relationship.

His most recent victim was Yura Katayose, the #1 actress in Japan, whom he pushed off a mountain whilst she was hiking in the countryside to make her death look like an accident.

Appearance
Hikaru is an attractive and sadistic man, bearing great resemblance to Aquamarine Hoshino. Similarly to Ai Hoshino, Hikaru has a star in each eye, although blackened in color. His black star pupils are even more prominent that of Aqua or Ruby's and they even extend out of his eyes. This could be an indication to him being insane.

When talking with Yura Katayose, Hikaru had his hair tied in a ponytail and narrowed his eyes.

Personality
Hikaru is a sadistic murderer who enjoys watching the life fade from his victims, who are primary up-and-coming actresses, claiming that it makes him "feel the weight of his own life". When he was just 11 years old, he was taken advantage of by a married adult actress, which is most likely what warped him to be the twisted man he is today.

As a former aspiring actor, he can skillfully hide his true nature in public by taking on the guise of a rather casual and dependable individual who others can lean on. Also, the fact that he bothered visiting Ai's grave implies that he truly did love her, albeit in his own twisted way.

When carrying out his murders, Hikaru appears to be a highly cautious individual careful to leave no incriminating evidence, attacking his victims in isolated locations and injuring them in ways where their deaths could be mistaken for accidents. His modus operandi seems to be to get close to his targets using his public persona and only strike when the conditions are perfect. When younger, he primarily made use of proxies, being implied to have been the one who leaked Ai's address to a disgruntled fan, and the one who told the husband of the actress who took advantage of him about their affair.

Known Facts

 * Hikaru was 15 years old when he got Ai Hoshino pregnant.
 * Hikaru is referred by Ai as "(her) ex" and she later referred to how their children would understand "(their) situation", implying that the relationship between them were mutually broken off.
 * Hikaru is implied to have fathered Taiki Himekawa with the married Airi Himekawa in secret when he was only 11 years old.
 * Taiki is unaware that his biological father was Hikaru, believing that it was Seijuurou Uehara.

Etymology

 * The name Hikaru is written in hiragana (ひかる), which has no special meaning. However, when written in kanji (光 or 輝), it could possibly mean:
 * 光 - "light".
 * 輝 - "brightness, radiance, shine, sparkle, gleam, twinkle".
 * Hikaru's surname Kamiki means "god, deity" (神) (kami) and "tree, wood" (木) (ki).

Trivia

 * Hikaru was born in Kanagawa.
 * Hikaru graduated from Faculty of Science.