▁her ▁to ▁take ▁pleasure ▁in ▁life ▁and ▁ful fill ▁her ▁goals . ▁Su ema ▁repeatedly ▁just ▁miss es ▁learning ▁about ▁what ▁is ▁really ▁going ▁on ▁in ▁the ▁city . ▁Through out ▁her ▁story , ▁the ▁major ▁theme ▁is ▁how ▁a ▁child hood ▁tra uma ▁can ▁influence ▁the ▁growth ▁of ▁an ▁individual . ▁Her ▁back story , ▁where ▁Su ema ▁was ▁st alk ed ▁by ▁the ▁serial ▁k iller , ▁is ▁described ▁in ▁full ▁detail ▁in ▁Bo og ie pop ▁at ▁Da wn . ▁ ▁Bo og ie pop ▁and ▁O thers ▁▁▁▁▁ ▁( Bo og ie pop ▁Ph antom ), ▁K ō ki ▁Mi y ata ▁( Bo og ie pop ▁and ▁O thers ) ▁ ▁Japanese ▁actor : ▁Y as uf umi ▁Ter iw aki ▁( Bo og ie pop ▁and ▁O thers ) ▁ ▁An ▁al ien ▁sent ▁to ▁Earth ▁to ▁evaluate ▁human ity . ▁When ▁E cho es ▁takes ▁on ▁human ▁form ▁to ▁eng age ▁with ▁human ▁society , ▁he ▁in ad vert ently ▁takes ▁on ▁a ▁form ▁more ▁highly ▁evol ved ▁than ▁current ▁humans . ▁His ▁knowledge ▁is ▁se aled ▁away ▁by ▁restrict ing ▁his ▁ability ▁to ▁speak ▁to ▁only ▁repeating ▁the ▁words ▁used ▁by ▁others ▁around ▁him . ▁This ▁is ▁why ▁he ▁is ▁named ▁E cho es , ▁in ▁reference ▁to ▁the ▁Greek ▁n ym ph , ▁E cho . ▁The ▁names ▁of ▁many ▁characters ▁in ▁the ▁Bo og ie pop ▁series ▁are ▁also ▁references ▁to ▁Western ▁music , ▁particularly ▁rock . ▁E cho es ▁is ▁a ▁song