Just watching a normal YouTube video and then got a mini jumpscare because of a Touhou game ad.

or C I R C L E C I

Are you watching on iOS or in a smart TV/android TV?

@Devnergy Just watching on an Android phone. I make the sound from my phone quite loud, so I got a mini jumpscare when the ad plays. There is no yellow mark on the video length line, so I was not prepared.

@NoOneCares since you're running Android, try YouTube Vanced (available for non-root and rooted devices, I use non-root one on my rooted Android), it's a YouTube application front-end that has ads disabled, picture in picture mode, background play and public-backed sponsor block api.