The phrase combines 'Inazuma,' meaning lightning, with 'honki,' the Japanese concept of showing your true serious effort. This kind of short battle shout became a staple of anime soundboards and meme edits because it instantly signals a power escalation without needing context. Clips like this circulate on TikTok and YouTube Shorts where creators pair the line with transformations, boss fights, and comedic moments of someone suddenly taking a trivial task completely seriously.