善悪の彼岸

Zen'aku no Higan is a single FABTONE released on 24 December 2025, between the album Gate of Heaven the month before and Gate of Hell the following June. Both of its songs went onto that album unchanged. It takes the shape this band's recent singles take: two sung songs and the same two as instrumentals, four tracks in all, catalogue number ANKM-0052 at 2,000 yen including tax. On Gate of Hell, "∞" is track five and "Zen'aku no Higan" track nine. So the single was a way of putting two songs from the second half of the pair in front of listeners six months early. No video was made for it; the first official film from this material was "Onikobe", from the album. Since moving to FABTONE in 2024 the band have worked this way repeatedly — singles first, the album afterwards. Gate of Heaven had been assembled behind three of them (Sekai Rinne, SAKURA chevalier and Convergent Rays); Gate of Hell got one.