Hoshino Aqua

Arguably Aqua's greatest talent is his ability to mimic, as demonstrated when he disguises himself and pretends to be Pieyon. His mimicry is so uncanny that he is able to fool his own sister.

In terms of acting, it is Aqua's nature to recreate samples that she has seen somewhere. In addition, Aqua has also demonstrated her ability to improvise on set, in conjunction, this suggests that Aqua follows the Meisner technique, an acting technique that emphasizes emotional preparation, repetition exercises, and improvisation.

By working for Gontanda Taishi as an intern, Aqua also became proficient in video editing.

Before the tragedy that struck his family, Aqua was considered relatively normal, except for his prodigious and unparalleled talent for acting, even as a child, and his quick wit and intelligence that made him read complex books. Given his past experiences, he has achieved many things that were not expected for someone his age. Acting was something he was open to and excelled at.

After the tragedy that killed his mother, Hoshino Ai changed and became cold, calculating, cunning and discreet, willing to do whatever means necessary to achieve his goal of finding his father. His psychological trauma from Ai's murder tends to resurface whenever he seems to forget his goals. It is a case of PTSD and acts as an active reminder not to stray from his original purpose of revenge. He blames himself for being weak-willed at that time, even though he was just a child. However, he used these negative emotions to exemplify his acting during his scenes in Tokyo Blade Theatrical.

Hoshino Aquamarine or simply Hoshino Aqua, or more commonly referred to as just Aqua. In his past life, he was known as Amamiya Gorou, a doctor who was murdered by a stalker of one of his patients, Hoshino Ai, and reincarnated as the latter's son.

An orphan and fan of Ai in his past life, he enjoyed being her son, entering the entertainment world at an early age. Unfortunately, this happy life ended when the same stalker who killed him in his past life murdered his new mother while he watched. This event changed him deeply, leading him to delve into the dark side of the entertainment industry to find the person who betrayed Ai, his father.

Main article: Hoshino Aqua As a child, Aqua was often called cute by those around him. As he grew up, Aqua became a relatively tall boy, described as "handsome", with blond hair, much like his younger twin sister, Hoshino Ruby. He also has long bangs hanging down the left side of his face and navy blue eyes, named after his late mother, Hoshino Ai, which feature a star in his right eye, symbolizing that he and his sister are halves of their mother.

He often changes his appearance due to his work as an actor.

Because he is Ai's son, many people have been able to point out their similarities despite being unaware of his lineage. Much to Aqua's dismay, he wanted to keep the truth about his deceased mother from the general public's knowledge. He also bears a strong resemblance to his biological father, Kamiki Hikaru.