原因

原因 was 张月光’s earlier Live2D product aimed at female users, discussed in 130. 张月光创业两年首次访谈：妙鸭不是AI Native产品、流程到上下文设计、One Way Door和乙女游戏. The product combined virtual character dressing, social/voice interaction, and paid skins or outfits, and reportedly reached tens of thousands of daily active users before shutting down.

The episode treats 原因 as an emotional product lesson. User mourning around shutdown made Zhang feel the presence of “living users,” and the product became part of the lineage from Live2D companionship toward AI Otome Games and AI Friend Products.

Connections

• 张月光 — founder/operator whose product taste was shaped by this experience.
• AI Otome Games — later AI companion-game direction that inherits the female-user and virtual-character thread.
• AI Interactive Entertainment and Designed Agency In Games — broader entertainment-design frame around interactive characters and user attachment.
• Product Led Willingness To Pay — users bought skins and outfits, making payment behavior part of the evidence.