理由

Template:SongHeader These are the lyrics of the 2000 version of this song. You can find the lyrics of the 2018 version here.

Lyrics
Japanese	Rōmaji	Fan-Translation
8月5日土曜日　空に雲は無く ビルの最上階から　気付けば別れを告げて 8月3日木曜日　僕の心に傷が 6度目の傷　ズタズタになり全て壊れてしまえ　全て 出会って初めて気付いた　自分の愚かさを 人を信じられないまま　人を傷付けていると 何故また僕は君の事を　懲りずに愛するの こうして僕は愛する事を　忘れられない様だ でも 信じる事が辛く　気付かれない様に 独りで泣いていた　君に分からぬ様 これ以上　これ以上は　傷付きたくない でも今だけは君だけを愛していたかった 忘れようとした時もあるけど　今は抱き締めたい 信じる事が辛く　君の過去を知った 忘れられないのは　君の方なのに これ以上　これ以上は　傷付きたくない でも君だけを　力強く抱きしめられない 8月5日　晴れた雲の無い空の中で もう最後だね　地面に広がる自分を見つめ 「君を抱いて」「君を見つめ」「君を愛し」「君を想う」	Hachigatsu itsuka doyōbi　Sora ni kumo wa naku Biru no saijō kai kara　Kizukeba wakare o tsugete Hachigatsu mikka mokuyōbi　Boku no kokoro ni kizu ga Roku do me no kizu　Zutazuta ni nari subete kowarete shimae　Subete Deatte hajimete kizuita　Jibun no orokasa o Hito o shinjirarenai mama　Hito o kizutsukete iru to Naze mata boku wa kimi no koto o　Korizu ni ai suru no Kōshite boku wa ai suru koto o　Wasurerarenai yō da Demo Shinjiru koto ga tsuraku　Kizukarenai yō ni Hitori de naite ita　Kimi ni wakaranu yō Kore ijō　Kore ijō wa　Kizutsukitakunai Demo ima dake wa kimi dake o ai shite itakatta Wasure yō to shita toki mo aru kedo　Ima wa dakishimetai Shinjiru koto ga tsuraku　Kimi no kako o shitta Wasurerarenai no wa　Kimi no hō na no ni Kore ijō　Kore ijō wa　Kizutsukitakunai Demo kimi dake o　Chikara tsuyoku dakishimerarenai Hachigatsu itsuka　Hareta kumo no nai sora no naka de Mō saigo da ne　Jimen ni hirogaru jibun o mitsume "Kimi o daite""Kimi o mitsume""Kimi o aishi""Kimi o omou"	August 5th Saturday, Not a cloud in the sky From the top floor of the building, when I came to, I was bidding farewell August 3rd Thursday, The wounds to my heart, the sixth wound, I'm torn to shreds, I'll be completely destroyed, everything. When we met I first noticed how foolish I was and how i hurt others by never having faith in them Why do I love you tirelessly again it seems I can't forget loving you this way. but.. Believing is painful, I was crying by myself without being noticed by you, as if you didn't know… I don't wanna hurt anymore than this but right now, I wanted to love only you. There were times I tried to forget you, but now I want to hold you. believing is painful, I knew your past, even though you were the one who couldn't forget. I don't wanna be hurt more than this but its only you, I can't hold tightly. August 5th, in the clear and cloudless sky, this is it, as I watch myself spread over the ground. "I hold you" "I watch you" "I love you" "I think of you"
These lyrics don't have an official translation. The source of the fan-translation is currently unknown.

Other Versions
理由　Susumu Yokota Remix	改-KAI- (2001)