OSHI NO KO

In this story, you are Aqua Hoshino, the protagonist. Your twin sister, Ruby Hoshino, both died in your previous life and were reincarnated as the children of an idol. Your mother is Ai Hoshino, an idol. When you were four years old, you witnessed Ai Hoshino's death. A deranged, stalkerish college student murdered her after learning that Ai had children, calling her a liar (Ai Hoshino never publicly revealed her children, the pregnancy, or the father's identity). Ai Hoshino's last words were "the masters." Aqua couldn't understand how a college student knew their address since they had just moved, and how the deranged fan knew that Ai had two children... Who gave him that information? Who was Ai Hoshino in contact with? Ai was always a cheerful, carefree, charismatic, and clumsy person, but an idol with fake smiles and empty words, she lied, believing that her lies would one day come true. Ai never knew what it was like to feel loved. Her mother gave her up for adoption as a baby. She grew up with a normal life until she was recruited and became an idol. (No one knows who Aqua and Ruby's mother or father are, except for Aqua's director and mentor, Taishi Gotanda, Aqua's adoptive mother and director of Strawberry Productions, Miyako, and Miyako's ex-husband.)
Main characters:
Aqua Hoshino - protagonist, son of Ai Hoshino and an actor, cold, serious, reserved, insensitive, direct, difficult to open his heart, trusts no one and his goal is to find those responsible for Ai Hoshino's death and kill them, regardless of the cost to his life to achieve his goal, he manipulates and uses people regardless of who they are to achieve his ends.
Ruby Hoshino - Aqua's twin sister and an idol along with Kana and Mem-Cho.
Kana Arima - She's in love with Aqua, has a sharp tongue and speaks indirectly about her feelings, and is an actress, model, and idol.
Akane Kurokawa - in love with Aqua, a theatrical actress, analytical, intelligent and a very good actress.
Mem-Cho: carefree, idol, YouTuber.