The only reason I'm watching Yuki Yuna Is A Hero is because it's on Netflix. The screencap is taken with a camera. Pictured: not the eponymous character.
You think Bakuon was ripping from K-ON? Here they have an idiot savant for the main character, and in 03 a Serious and Capable Azusa-chan joins the main 4. Unlike K-ON they didn't even bother to awkwardly graft her into OP. Must be a death flag.