Ah. Some songs are certainly about death while others mention death, or something kind of related to it (parting forever; "Dearest," "HEAVEN"). Interesting.
By the way, Andrenekoi, thank you for your descriptions. I might have read something about the lyrics of "Duty" relating to Ayu's career, but I could have forgotten. Either that or I simply didn't know. But wow, those
are depressing. o_o She's so deep...