I know, I know, boku wa shitteru
Boku wa kimi no koto shitteru keredo
Kimi wa boku no namae sura mo shiranai tte koto

I know, I know, boku wa shitteru
Kimi ni wa taisetsuna hito ga ite,
Sono hito to issho ni toki ni sugoku shiawase souna kao wo suru tte koto

I know, I know, boku wa shitteru
Kimi ga sono hito to DE-TO no kaeri ni itsumo yoru mise no KO-HI- ga okiniiri da tte koto
Sorya sou sa, sore wa boku no jiman no KO-HI- dakara ne

Boku wa JO-KU itte warawaseteageru koto mo
Damatte GUCHI wo kiiteageru koto mo dekinai kedo,
Itsudemo choppiri nigame no KO-HI- de yokattara sosoideageru kara

I know, I know, boku wa shitteru
Kimi ga hitori de kuru toki ni fui ni miseru sono kao ga sabishige datta koto
"chotto nigasugita kana" nante
Sonna njanai tte koto mo

Hontou wa nani hitotsu shiranai kimi no koto
Doushite konna ni mo suki ni nacchatta ndarou?

Tatta ippai no KO-HI-, sore ga boku ni dekiru seiippai no kimochi

I know, I know, boku wa shitteru
Kimi ga saikin konai riyuu ga yappari aji no sei janai tte koto
Saigo ni kita ame no hi, zubunure no kimi no hoo ni nureteita no wa ame ja nakatta kara

Boku wa samui yoru ni dakiyoseteageru koto mo
Asa made zutto yorisotteageru koto mo dekinai kedo,
Moshi, choppiri nigame no KO-HI- ga nomitakunattara
Mata itsudemo oide

Douka sono made, kawarazu ogenki de