Arika , a unit consisting of voice actor and singer Yuko Natsuyoshi and guitarist and composer Yamato , will release a new concept EP titled "ASTRAL ECHO" in Japan on June 25 . The unit provided the two ending theme songs for the TV anime Unnamed Memory — "blan_" for Season1 in 2024 and "inclusion" for Season 2 in 2025. In addition to the two songs, the four-song EP also includes two new songs inspired by the anime — "Fearless Bird" and "Color of You." The lyrics of all four songs were written by Natsuyoshi, who played Sylvia, one of the main characters in the anime, while Yamato worked on music and arrangement. An all-song preview video is now available on the unit's official YouTube channel . Arika "ASTRAL ECHO" All-Song Preview "ASTRAL ECHO" CD jacket Arika "blan_" Music Video Arika "inclusion" × Unnamed Memory Special Music Video RELATED: Unnamed Memory Season 2 Anime Releases Pre-Finale Trailer The TV anime adaptation of the Unnamed Memory fantasy light novel series created by Kuji Furumiya (story) and Chibi (illustrations) aired for two seasons in the spring 2024 season and winter 2025 season. Crunchyroll, which is streaming the series , describes the synopsis as such: Seeking to end a curse thwarting his lineage, Prince Oscar sets out on a quest that leads him to a powerful and beautiful witch, Tinasha, and he demands a unique bargain: marriage. Though unenthused by the proposal, she agrees to stay in his castle for a year while researching the spell cast upon him. But beneath her beauty lies a lifetime of dark secrets that soon come to light. Source : Arika official YouTube channel / X (formerly Twitter)