In a world where superpowers define status, Haruto Takahashi is the powerless son of Japan's strongest hero — the glamorous S-Rank "Crimson Valkyrie," his stunning MILF mother, Akira Takahashi. His father is a devoted househusband, equally unpowered, while his elder sister inherited a respectable B-Rank ability. Haruto's high school life is miserable: constantly bullied by the arrogant A-Rank Kaito Voss (son of the SS-Rank "Titan Emperor"), while his C-Rank girlfriend, the curvaceous and ambitious Mio, and his D-Rank best friend, Kenji, grow suspiciously close through Hero Association scouting sessions.
Unknown to Haruto, Mio and Kenji have been secretly hooking up for months, using their "training" as cover. The bullying escalates until Haruto returns home bruised. His parents visit Kaito's mansion to intervene — and return acting oddly "settled." The next day, Haruto receives an anonymous video: his voluptuous, powerful mother getting aggressively dominated and thoroughly fucked by the teenage bully Kaito in his own home, while his tied-up, humiliated father watches with a pathetic erection. Overwhelmed by shock, betrayal, jealousy, and unwanted arousal, Haruto masturbates to the scene in tears before blacking out.
He awakens to the "My Cuck System" — a perverse LitRPG interface that activates through netorare (NTR) experiences. The system grants him points, skills, and power-ups based on witnessing, enduring, or even facilitating the corruption and sexual conquest of his loved ones (especially his mother, girlfriend, and sister) by superior supers. What begins as trauma-fueled humiliation evolves into a dark journey of twisted growth: Haruto must balance school life, family secrets, hero society politics, and escalating sexual depravity while using his "cuckold" powers to rise in a world that despises the weak.
Blending high-stakes superhero action, adventure in villain raids and hero rankings, and heavy adult NTR content, the story explores themes of power imbalance, fetishized humiliation, revenge-through-submission, and the corrupting allure of forbidden pleasure in a superpowered Japan.
Genre Notes: Heavy on explicit NTR (netorare/cuckolding), mind-break, size comparison, MILF, cheating, voyeurism, and eventual system-enabled corruption or revenge arcs. Action scenes involve superpower battles, while adult scenes are detailed and frequent. Tone mixes dark eroticism with progression fantasy elements.