The "gacha" mechanic is gambling, but the streaming content is catharsis. Teens watch other teens spend their allowance to pull for a 5-star character—the scream of victory or the silent walk to the balcony after 100 failed pulls is a specific genre of schadenfreude entertainment.
: Currently the "whirlwind" group among high schoolers. Their song "Sukisugite Metsu!" (I love it so much I'm destroyed!) and its accompanying photo pose are viral nationwide.
A fragile but booming segment. Japanese teens listen to "ASMR" (Autonomous Sensory Meridian Response) for stress relief, but specifically "Situation" audio: roleplay scenarios where a senpai (upperclassman) helps you study, or a friend walks you home. Apps like Nana and Youtube ASMR channels specifically for "Otaku ASMR" generate millions of views. It is intimate, non-visual entertainment consumed before sleep.