Blue Box Anime's Season 2 Trailer Unveils Theme Songs Posted on August 26, 2026 By admin No Comments on Blue Box Anime's Season 2 Trailer Unveils Theme Songs aiko performs opening song “Anata no Hana no Iro”; elsewhere kikou performs ending song “blue in” Source: https://www.animenewsnetwork.com/news/2026-08-26/blue-box-anime-season-2-trailer-unveils-theme-songs/.240991 Music