Pop'n Music 15: Distance This is Pop'n Music 15 Adventure, a music game similar to Beatmania where the objective is to keep a certain percentage of quality in skill. While the peak of the difficulty is easier than Beatmania, it's learning curve is steeper than it with nine large buttons over seven keys and a scratch record.
My series of videos include layer flicker as they are directly ripped from an arcade copy through a overqualified recorder, rather than a recording of the computer screen itself.
The genre is Sympathy, for the lyrics. I don't know what to define the actual genre though. The character is Sumire, another fan favorite. Her main theme is military factions, currently the Air Force, Navy, and Army, and western factions at that. Since the elite forces and marines are already done by other characters, I suspect a upgrade to The King and Mambo status where she just changes countries and time periods.