watashi ga mitsuketa kagi de hiraku tobira wa doko ni aru? ate mo naku sagashi tsuzuketa yatto mitsuketa no ni hitotsu ja tarinakatta "kono kimochi wa dare ni mo hibikanai" hitoribocchi ni narete koe no dashikata mo wasurete kimi ni nani mo todokanai tojikometa mama no omoi ga utaidasu doushitai? shinjitai mune ga yure ugoku kimi ga tobira o tataiteru jouzu ni koe ga dasenakute mo "mou sukoshi matte" chanto tsutaetakute mirai key note chiisana kokoro no heya ni hitori de ita yo shagamikomi me o tojite mimi o fusaida kore de raku ni nareru dakedo kurushii mama de "kono itami wa itsuka kieru no?" yuuki ga nai dake de fumidasenai koto hontou wa kizuiteru yo mae kara oshikometa mama no omoi ga afuredasu waraitai nakitai dareka to issho ni kimi ga tobira o tataiteru ano hi kara nanimo kawarazu "kono mama de ii no?" tozasareta tobira ni sotto te o nobasu mirai no kagi wa kitto hitori ja nakute dareka to mitsukeru mono nanda tojikometa mama no omoi ga utaidasu doushitai? shinjitai mune ga yure ugoku kimi ga tobira o tataiteru jouzu ni koe ga dasenakute mo "ima soko ni iku yo" chanto tsutaetai watashi mo kimi no kagi ni naritakute mirai key note