Check out the stream:
   • 深夜のお歌配信！  

Original song:
   • 「残酷な天使のテーゼ」MUSIC VIDEO（HDver.）/Zankok...  

Her channel:
   / @inugamikorone  

She already sang this before:
   • Video  


Pretty sure a lot of people were asking her to sing this. One of my favorite song from one of my favorite anime as well. Not sure if you guys have watched Evangelion but if you have do you remember the scene where the radio was playing and this girl introduced her smart doggo, she then asked a question to the dog something like 250-249, the dog then replied to her with a "wan!".