(first half mobs, last half boss. boss comes at a predetermined time in the song)
(how is damage calculated - elements)
(how to read cards)
(how do boss levels work -- pretty sure I saw this on the Japanese wiki)
below might be a different page
(battle overdamage ranks)
(what are battle ranks - first dan, second dan, etc.)
(benefits of the battle system - dealing higher damage gives you more money/gems)