I've been trying to search around, but almost all tutorials are for F where it was differently, so I haven't found answer to my question: how do you change the song's bpm in F2nd's edit mode? Other than that I've managed to learn how to use edit mode but it's no use if I don't know how to change bpm.
If you're in simple mode, then I don't believe the tempo can be changed but if you're in advanced mode, go to the fourth from the bottom option that says リズム, press O, and then the top option, then you can select your desired BPM.