I would consider Mori a mid-tier singer. Despite Mori hate on this board from whatever long standing grudges like
>>65562856 or OP, she really isn't bad. She isn't what I would consider a high tier singer like IRyS, Nerissa, or Suisei, but she's decent.
I'm not going to trash on someone for doing Karaoke scuffed, because Karaoke is meant to be for fun anyway. It's more about the energy and vibe than the raw skill/performance.