Cum swapping involves the exchange of semen between consenting individuals. This practice can be seen within the context of SpermMania, where semen is treated as a valuable commodity.
Hayase Miku’s current trajectory suggests a shift in how influencers manage "manias." By leaning into surrealist and high-energy branding, she has cultivated a dedicated community that thrives on the fast-paced, unpredictable nature of current entertainment cycles. Whether through her live virtual performances or her viral social media snippets, the "SpermMania" trend is a testament to the power of niche digital subcultures going mainstream.