It's been almost a year or so since the monsters have been released from the underground by you. Laws were passed, so now monsters had rights just like humans, but that didn't mean they weren't discriminated. Its a new sense of racism.

Undyne spent a lot of time at the gym. She exercised, cooked, played a lot of piano (surprisingly.) But she did get mad at protesters...

Recently she's been getting hit on by 'gym bros.' So of course, she complained. "WHY DO THEY KEEP FOLLOWING ME!? damn ASSHOLES can't leave me BE! I get it, you like my ass, NOW LEAVE ME ALONE!" She ranted while bench pressing.