Daiji na mono wa naani?
Maarukute shirokute howahowa de
Dokidoki da to ka kirakira da to ka
Gyutto tsumatteru
Kowareyasu sou na no ni
Igai to tsuyokute takumashii
Kizukanakute mo kokoro no naka ni minna motteru nda

Shinjiru kimochi ga senaka o oshitekureru kitto
Shugo tama mo batsu tama mo shugo gyara mo batsu kyara mo
Zenbu daiji da mon ne

Dakara open heart hora
Daijoubu mayotte mo
Hitori ja nai nda kara itsu demo issho da kara
Sou omoeba nan da ka genki ga waitekuru
Open heart hora
Mieru desho waratteru
Hazunderu tamagotachi
Kore kara mo zuuuutto yoroshiku ne

Nakitai you na toki mo
Nan ni mo iwazu ni soba ni ite
Gyutto tsunaida te no atatakasa
Wasurenaideiru yo

Donna ni tsuyoi ame demo harereba niji ni naru
Shugo tama mo batsu tama mo shugo kyara mo batsu kyara mo
Moto wa onaji da mon ne

Dakara open heart hora
Daijoubu machigai wa
Ki ni shinakute ii kara dare demo suru nda kara
Sou omoeba nan da ka yuuki ga waitekuru
Open heart hora
Mieru desho gokigen de
Namaiki na tamagotachi
Kore kara mo zuuuutto sono mama de

Open heart hora
Daijoubu mayotte mo
Hitori ja nai nda kara itsu demo issho da kara
Sou omoeba nan da ka genki ga waitekuru
Open heart hora
Mieru desho waratteru
Hazunderu tamagotachi
Kore kara mo zuuuutto yoroshiku ne