It was : Ayumi Hamasaki

kimi no koe ga kikoeta you na ki ga shite
boku wa futo tachidomatta n' da
iru wake ga nai koto wa wakatte iru noni
soredemo sagashitsudzuketa n' da

kimi ga ita ano kisetsu wa
  nani yori mo mabushikute
瞳(me) ni utsuru mono subete ga
  kagayaki ni michite ita
boku-tachi wa itsu no hi kara
  motomesugite shimatta no
tada soba ni iru dake de
  sore dake de yokatta hazu na noni ne
kimi ni nita yokogao wo tooku michi no mukou
mitsuketa you na ki ga shita kedo
boku wa mou tachidomaru koto wo sezu ni
mae wo muite arukitsudzuketa
kimi to ita ano kisetsu wa
  nani yori mo mijikakute
瞳(me) ni utsuru mono subete ga
  itooshiku kanjite ita
boku-tachi wa nani wo nokoshi
  nani wo ushinatta no kana
soshite sore wa ato dore hodo
  toki ga tateba uketomerareru no kana
kimi ga ita ano kisetsu wa
  nani yori mo mabushikute
瞳(me) ni utsuru mono subete ga
  kagayaki ni michite ita
boku wa mada koko de hitori
  kore de yokatta no kana
nante totemo akirame no warui
  kangaegoto wo shite iru n' da