Calling a dude handsome and asking if he's got a girlfriend isn't sexual harassment though? If they kept pressing AFTER he declined them, sure, but what those girls did was just normal flirting/hitting on someone. Bruh
I mean, flip the genders and have it be a bunch of dudes saying "wow you're hot miss do you have a boyfriend" to Yukishino, which is pretty much exactly what Catcalling is, and is a known form of (I guess "low-grade" if you really want to split hairs) sexual harassment.
Also it being women hitting on a dude is still Catcalling, but people tend to recognize it more when it's men doing it to a woman, so.
But, sure.
If it were a woman in the workplace then it depends on ONE THING: