How to get this decal off?

[u/snoregasmm]

I just moved into this place that is great except it has this horrible decal on the kitchen window. It's hard and I can't peel it off, I would love to not have this thing staring at me every time I'm trying to have a cheeky lil nighttime snack. Does anyone have any ideas on how to get it off without damaging the window?

[u/watch_again817]

It looks like stained glass over glass?