Female protagonist + unlimited flow + no fixed CP + wisdom flow + second person
When you wake up, the system tells you: survive, clear the instance, and be rewarded with random props.
You looked at the C-level item [Windmill] in your hand and fell into silence.
[Big Windmill]: Automatically when there is no wind, and stops when there is wind.
You: "So what's the use of this thing?"
Later, you drew an E-level item [True Umbrella].
[Real Umbrella]: After opening, it will rain continuously within the area of the umbrella for three days.
You: "I understand. This means that I need to hold an umbrella while getting wet in the rain."
Others are begging for divine equipment, but you use a bunch of weird props to push through the dungeon.
The monster is chasing you, you hold the [real umbrella] and let it slip.
The BOSS blocks you, and you hold up the [Big Windmill] to make it doubt its life.
In short, this is a story that relies on IQ and (unreliable) props to pass the level.