Kaeritakunai natsu no yoru
Futari wa itsumo
Ude wo kunde sakamichi wo yukkuri to
Aruku sono bun dake Ai ga fukamatta

Donna kotoba wo narabete mo
Kono shunkan wo
Hyougen suru koto wa dekinainda ne
Futari no atama ni
Shikkari to yaki tsuiteru bamen

Wasuretakunai natsu da yo In my Heart
Otona ni naru hi ga kitatte mo

Omoidetachi wo Kasaneteku kedo
Sore demo kotoshi no natsu wa tokubetsu no natsu dakara

Sukoshi suzushii natsu no yoru
Matsuri bayashi ga
Kikoete kuru Futari sukoshi kakeashi
Takusan no hito ga Hanabi miageteru

Ookii no ga agatta toki
Tachidomattara
Kimi wa kyuu ni KISU wo shite kita keredo
Minna wa hanabi ni
Muchuu dattashi kidzukare nakatta

Wasuretakunai natsu da yo In my Heart
Chikyuu no saigo ga yatte kite mo

Koukai nante Shitakunai kara
Hageshiku aishite mainichi wo tanoshiku ikitai

Wasuretakunai natsu da yo In my Heart
Otona ni naru hi ga kitatte mo

Omoidetachi wo Kasaneteku kedo
Sore demo kotoshi no natsu wa tokubetsu no natsu dakara

Wasuretakunai natsu da yo In my Heart
Chikyuu no saigo ga yatte kite mo

Koukai nante Shitakunai kara
Hageshiku aishite mainichi wo tanoshiku ikitai