Teriyaki sardines from Japanese grocery store -recommendations?

Hi all! Sorry if this isnt the best place to ask, but I picked these up at my local Japanese store to try. I dont know much about them other than the packaging

The back has some recommendations on how to eat them, but I was hoping to ask anyone who’s had these before how they have enjoyed them? What’s the flavor profile like, what’s a good side? Do they have bones?

Thank you!