A long-awaited full album by Reol. Bearing in its title the concept "Bijigaku" that represents Reol's new activities, as announced at her one-man live at Yokohama Arena, this work includes numerous strong tie-in tracks such as McDonald's USA "WcDonald's" official track "Kanjo Onchu", an inspired song "SHINOBI" for the character Ranha from the space fantasy RPG "Honkai: Star Rail", and the TV anime based on a popular comic "Blue Exorcist: Beyond the Snow Saga" opening theme "RE RESCUE". Collaborations with spirited composers and artists are also attractive, including Shin Sakiura, who works as a composer on "Kakumei Dochuu", and guest vocals by nqrse, the first since the early signature song "Ooedo Ranvu", making it a disc that lets you enjoy Reol's deepening and evolution as an artist. The limited edition A comes with a Blu-ray.