【AIくのいち】bad guy / Billie Eilish (KIRI Cover) | Acoustic Wagakki | 忍音

霧 (KIRI) covers bad guy by Billie Eilish. The kunoichi meets dark pop. What happens when a shadow warrior reimagines a modern classic with traditional Japanese instruments? ⚔️ Original song: bad guy ⚔️ Original artist: Billie Eilish ⚔️ Cover arranged and performed by 霧 (KIRI) All arrangements are original productions by 霧 (KIRI), crafted with AI and refined through unique artistic vision. Composer: 霧 (KIRI) © 2026 KIRI / Shinobi Sound #badguy #BillieEilish #和楽器 #くのいち #AIカバー