happily ever after by Nakagawa Shoko Overview Tag Appears on GURREN LAGANN BEST SOUND - THEME SONG & CHARACTER SONG DISC Sorairo Days Tengen Toppa Gurren Lagann OP Single Tengen Toppa Gurren-Lagann OP Single - Sorairo Days Tengen Toppa Gurren-Lagann OP Single - Sorairo Days [Limited Edition] Tengen Toppa Gurren-Lagann OP - Sorairo Days - Nakagawa Shoko Tengen Toppa Gurren Lagann OST Playcount 7 Listeners 5