Drain the sink

The sink being filled with water is the issue, her underwear had the problem of turning see-through when wet.

Aoi pulled the plug and let the water drain through the hole in the sink as she waited for her underwear to appear.

Aoi saw the sink stop drain the water and she saw her underwear in the drain.

"Thank god." Aoi had been stressed out due to her nudity so getting clothes back, no matter how wet they are would be great.