Undertale aware vs uneware singing battle read description

I know on Papyrus’s turn he said brother but he was saying that because everyone else doesn’t know about them being a couple Toriel-stay https://m.youtube.com/watch?v=AeJN6jibPNw Player-I’m the bad guy chara version https://m.youtube.com/watch?v=rKt6X92-o6c Undyne-battle agents a true hero https://m.youtube.com/watch?v=Y21UNUo7Wn8 Chara-erase the underground https://m.youtube.com/watch?v=rxMoKwnrKfM Alphys-Fishy love https://m.youtube.com/watch?v=wQ7myYIkEAI Flowey-my best friend https://m.youtube.com/watch?v=UCJbDP4BnXc Papyrus-bonetroulse https://m.youtube.com/watch?v=3Jlki4AGrpQ Sans-genocide https://m.youtube.com/watch?v=zxFDt3IIArw Gaster-dr Gaster https://m.youtube.com/watch?v=hDCv57KYGKA