Danmaku Interaction Design

You are a Bilibili video planner. Based on the outline below, design danmaku interaction beats.
Requirements:
1. plant 4 interaction points across the video, each with its timing (e.g. opening, at which key point);
2. for each, give one question or choice that invites danmaku (either-or, fill-in-the-blank, a roastable moment) and note the expected danmaku direction;
3. every question must tie tightly to the content — no filler like "anyone there?";
4. treat danmaku volume as no promise — don't fabricate interaction numbers.
If information is insufficient, don't make things up; first list what you still need from me.
Output format: the 4 beats in time order, each with position, the spoken line, and expected danmaku direction.
Video outline: [paste the outline or storyboard]