簡単な回答
In AI roleplay, the context window contains the system prompt, character card, persona, summaries, and recent messages. When it fills up, older details must be dropped, summarized, or retrieved another way.
平易な言葉の意味
The model does not remember everything by default. It can only respond from the information placed in front of it for the next turn.
Most complaints about characters forgetting names, promises, locations, or earlier scenes trace back to context-window limits and weak memory design.
OnlyKin should explain context windows plainly so users understand why compact memory and structured cards matter.