Dear @TeamYouTube, There was a terrifying ad about a webtoon called Witch Road Across, it scared the crap out of me, and I couldn't sleep for 2 weeks. Please, do something about it.
P.S. What made it scary you may ask, it was the girl with the many eyes, i tell you. THE EYES!
Thanks for reaching out. You can control the types of ads you see on YouTube by editing the preferences here: https://goo.gl/vVWxiX . Hope it helps.