single ▁released ▁ 2 0 0 2 . 0 2 . 2 7 ) ▁ ▁" Secret ▁Let ters " ▁ ▁The ▁order ▁the ▁videos ▁are ▁arranged ▁on ▁the ▁DVD ▁are ▁coinc ident ally ▁the ▁order ▁in ▁which ▁they ▁were ▁released . ▁ ▁The ▁videos ▁are ▁meant ▁to ▁be ▁watched ▁in ▁a ▁series , ▁so ▁that ▁the ▁four ▁together ▁tell ▁a ▁story , ▁with ▁prev ail ing ▁them es ▁of ▁life ▁and ▁death ▁and ▁the ▁m ing ling ▁of ▁the ▁two . ▁ ▁The ▁swe eping ▁ball ads ▁of ▁Ro ent gen ▁mask ▁a ▁much ▁more ▁solemn ▁message . ▁ ▁Co vers ▁note ▁An ▁interesting ▁note ▁is ▁that ▁the ▁cover ▁of ▁the ▁Ever green ▁single ▁features ▁one ▁rose . ▁ ▁Angel ' s ▁T ale ▁features ▁two ▁t ul ips . ▁ ▁Cont inu ing ▁in ▁this ▁pattern , ▁Sh allow ▁S leep , ▁the ▁third ▁single ▁released ▁should ▁have ▁three ▁l il ies ▁but ▁instead , ▁the ▁single ' s ▁cover ▁clearly ▁dep ict s ▁four ▁l il ies . ▁ ▁Two ▁theories ▁are ▁possible : ▁▁ 1 . ▁Lil ies ▁are ▁a ▁classic ▁symbol ▁of ▁death . ▁ ▁The ▁number ▁' four ' ▁( 四 ; ▁sh i ) ▁is ▁a ▁Japanese ▁hom onym ▁of ▁death ▁( 死 ; ▁sh i .) ▁▁▁ 2 . ▁Ro ent gen ▁St ories ▁features ▁not ▁only ▁the ▁tr il ogy ▁of ▁singles , ▁but ▁also ▁a ▁music ▁video ▁for ▁another ▁Ro ent gen ▁song , ▁Secret ▁Let ters . ▁ ▁Perhaps ▁Secret ▁Let ters