Wash
The previous tsunami gave everything in this town a good wash. There are many Laundromats in this town so when the previous tsunami hit, all of the detergent mixed with the water and gave everything a good wash.
Imagine this soapy tsunami, washing all the things in town. Hear the soapy waves bubbling with cleanliness as they crash down around you.
せん
あら
None
All the Laundromats in town are owned by centaurs (せん), and they got a good wash as well. Being half horse, centaurs have a lot of hair that needs washing. Luckily, the soap tsunami gave them a good wash too.
Imagine these centaurs frolicking around in the aftermath of the previous tsunami. It’s just like a big bathtub for them. Hear them splashing and neighing in the water.