Oshi no Ko
Oshi no Ko is a dark psychological drama set in Japan's entertainment and idol industry, following twins who are reincarnations of a murdered idol's biggest fans. Across all three aired seasons the series deals heavily with stalking, murder, cyberbullying, suicide, and the emotional toll of fame — content firmly aimed at older teens and adults.
Best suited to mature teens and adults comfortable with intense psychological drama; not recommended for children under 15.
Episodes to know about
The idol Ai Hoshino is fatally stabbed by a stalker with graphic blood shown; her doctor is also murdered in the same sequence.
Extended bloody aftermath of the stabbing murder is shown with dark visuals and intense music.
A parent is killed on screen in front of their young children; grief from this event carries through the entire series.