Why are these korean ads on my chrome browser?

[AC Question]

When I open my chrome no matter what page im on there is this one add in the bottom of my page. Its always korean too. One was about lezhin comics and there was another one about shoes? I have no idea how to get rid of it and it drives me insane! There is a close but when I click it it just shows back up a second later. There was also a ? That I clicked and it popped up with something that read: "There are lots of apps which are integrated with toast ad. To provide various kinds of ads such as text ad, banner ad, video ad on mobile web is function of mobile app."
I dont know what to do please help!

 

[belodion]

Shoes, eh? Comics.

You could try clearing your Chrome browser cache for that period of time from when the trouble started.