Daiji na mono wa naani?
Maarukute shirokute howa howa de
Doki doki da to ka kira kira da to ka
Gyutto tsumatteru
Koware yasusou na no ni
Igai to tsuyokute takumashii
Kidzukanakute mo kokoro no naka ni minna motterun da

Shinjiru kimochi ga senaka wo oshite kureru kitto
Shugo tama mo batsu tama
Mo shugo kyara mo batsu kyara mo
Zenbu daiji da mon ne
Dakara open heart hora
Daijoubu mayotte mo
Hitori ja nain dakara itsudemo issho dakara
Sou omoeba nandaka genki ga waite kuru
Open heart hora
Mieru desho waratteru
Hazunderu tamago-tachi
Kore kara mo zuutto yoroshiku ne

Nakitai you na toki mo
Nanni mo iwazu ni soba ni ite
Gyutto tsunai da te no atatakasa wasurenai de iru 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 surun dakara
Sou omoeba nandaka yuuki ga waite kuru
Open heart hora
Mieru desho gokigen de
Namaiki na tamago-tachi
Kore kara mo zuutto sono mama de

Open heart hora
Daijoubu mayotte mo
Hitori ja nain dakara itsudemo issho dakara
Sou omoeba nandaka genki ga waite kuru
Open heart hora
Mieru desho waratteru
Hazunderu tamago-tachi
Kore kara mo zuutto yoroshiku ne