A vengeful jellyfish returns to settle old scores with Reibai Sensei, the eccentric teacher who wronged it years ago. What begins as a supernatural grudge match spirals into absurd chaos when the creature's plan for revenge becomes increasingly ridiculous, forcing Sensei and his bewildered students to face an enemy that's equal parts terrifying and completely absurd. The special trades dramatic confrontation for pure comedic mayhem. The tone shifts between goofy horror and slapstick humor, keeping viewers off-balance as the jellyfish's escalating schemes become more outlandish. Supernatural elements clash with everyday school life in ways that refuse to take themselves seriously. This one rewards viewers who've already connected with Reibai Sensei's brand of weird comedy and want more of its chaotic energy. If you're drawn to shows that blend the genuinely eerie with laugh-out-loud moments, where logic bends and nothing stays predictable, this special delivers exactly what its premise promises: a genuinely strange encounter played entirely for laughs.