I started Bandori mostly to read everything before Our Notes drops, but also slightly to finally see why SayoHina absolutely dominates over every other ship in this series (there's 1k more SayoHina works on pixiv than KasuAri) :0
^I think it was mainly that they just had a very dramatic and tense relationship and also people just like twincest. Truly Bandori will never ever beat the incest fandom allegations
Fun fact: I originally watched Frontier because I heard What About My Star? out of context and thought they were singing to each other rather than competing. I was very disappointed when I got to that song and realized they were not going to dump the selfish guy and get together.