Aqua Hoshino/Relationships

Family

 * Ai Hoshino: Aqua's mother. In his previous life, Ai was his favorite idol and he was an obsessed fan. When Gorou died, he was reincarnated as her son. Despite their years living together as mother and son, he never got to truly realize Ai as a person, as she intentionally hid her true self. Regardless, her life and death alone made him into the person he is today.
 * Ruby Hoshino: She is Aqua's younger twin sister and one of his patients before they reincarnated. He wants to protect her and doesn't want her to become an idol, as he fears the possibility of her meeting their mother's fate yet again. Because of his overprotective nature, he gets labeled a "sis-con" by his sister and Co. Even if both don't show it, they truly care about each other. Even if he doesn't want to do something, he is willing to go through pain to see out his goals. Whether it be through acting jobs or participating in a reality-dating show and putting up a face. He wants to do it for his and his sister's sake. Unfortunately, after all is said, they are unaware of who was who in their past lives.

Friends

 * Kana Arima: Aqua met Kana at one of Taishi's movie sets. She was outperformed by Aqua's acting skills and was inspired by it. She later met him at their high school and they became friends with him. He later convinced her to join his sister to start an idol group. It's also hinted that Kana has romantic feelings toward Aqua. Kana and Aqua deeply care for each other, mutually providing supports in business as also in private. By the remarks of Ruby Hoshino, Kana seems to be the one of the few people who could bring Aqua back to his "old-self" after he has changed to be more aggrieved and gloomy after Ai Hoshino's death. Aqua often goes out of his way to encourage Kana Arima when she's in distress, such as how he waved her glowstick's color at the new B-Komachi's first performance as he noticed that Kana is unassured of her performance by the responsibilities she carries as the center of the group.
 * Akane Kurokawa: Akane and Aqua met and became acquainted at the reality show, LoveNow. She became the target of bullying by social media, after accidentally injuring Yuki, another beloved actor in the reality show, because of this she attempted jumping off a bridge during storm weather. He then went on to embrace her to reassure and talk her out of attempting to kill herself. Aqua and the cast stayed then up for numerous nights to ensure that the video showing how  things really are behind the scenes that they published  to redeem Akane's reputation. To the public eye, Akane is his girlfriend, however it should be noted that he has stated that the relationship is strictly for work as well as he's not interested in initiating a relationship. As of recent he promises to fulfill his duties as her 'boyfriend', such as protecting her and ensuring she achieves her goal of beating Kana and Himekawa. Despite initially trying to intimidate her of helping him fulfill his revenge, he was pleasantly surprised to see how supportive she was of him later on.

Others

 * Taishi Gotanda: Aqua's boss. Aqua first met Taishi at the age of 4 when Ai brought him to the studio. Taishi talked to him and noticed his strangely mature way of speaking, so he offered Aqua to act in his movies but was shut down. Later, Aqua took his offer in exchange for him giving Ai a job. After Ai died, Aqua asked Taishi to raise him and work as his assistant. He currently works as Taishi's assistant behind the scenes.