The fact that both of the women were going in there, meeting up with the expectation that they were meeting a man (the girl dressing up, getting dolled up for a man), both of them having a crush and falling for who they believed to be a man, and the fact that they’re were like “I expected a boyfriend but I’m completely open to a girlfriend too” really makes me think the bisexual tag actually fits, cuz at the end of the day, they were still attracted to the idea of a dude + you don’t have to date either gender for you to be bi/straight/gay.
It’s all about attraction, and they were both attracted to their “male” childhood friend. It’s def not “pure yuri” as someone else said, as they would’ve definitely dated their childhood friend if they were actually a guy like they expected.