— Nyan to Puri-Puri Prisoner. |
Puri-Puri Prisoner vs. Nyan is the fight between the S-Class hero Puri-Puri Prisoner and the Monster Association executive Nyan.
Prelude[]
While the prisoners of Smelly Lid Prison attack Puri-Puri Prisoner, Nyan sneaks up from behind the hero. Nyan warns him that once someone transforms into a monster, there's no turning back.
Battle[]
Before Puri-Puri Prisoner can react, Nyan swiftly slashes the hero's chest, causing a significant spill of blood.

Nyan slips through a crack in the wall
Puri-Puri Prisoner stands firm after the attack. As he grows stronger during the fight and attempts to forcibly shower the prisoners with love, Nyan starts to feel uneasy. This discomfort stems from its past as a house cat, where its former owner constantly overwhelmed it with unwanted affection. Not wanting to confront a similar adversary, the monstrous cat chooses to retreat, managing to slip through a crack in the wall. Puri-Puri Prisoner is baffled by Nyan's escape, to which the monster explains it can pass through any gap wider than 3 millimeters. With numerous cracks available, it can easily navigate around the Monster Association Headquarters.
Despite Nyan's retreat, Puri-Puri Prisoner refuses to let it get away so easily. Determined, he amplifies the power of the vibrations from the Bristle Armor on his forearms. The hero dives into the concrete like a swimmer, using his Angel ☆ Crawl to pursue Nyan. Observing this, Nyan quickly enters another crack to evade him. However, Puri-Puri Prisoner remains resolute, chasing Nyan fervently. They come across the prisoners again, with one of them asking Nyan if he killed Puri-Puri Prisoner.
Suddenly, Puri-Puri Prisoner crashes down from above, inadvertently crushing and killing the prisoners with his Angel ☆ Crawl. He mourns their loss but swiftly pivots his focus back to Nyan, preparing to confront the Dragon-level monster and avenge the fallen prisoners.
At this point, however, Nyan has already retreated beyond Puri-Puri Prisoner's line of sight, seeking out other heroes to battle. Puri-Puri Prisoner, oblivious to this, continues through the headquarters in search of more monsters, declaring that Nyan will regret facing whichever hero it encounters next.
Aftermath[]
After slipping through the cracks of the headquarters, Nyan encounters Saitama and attempts a surprise attack. To its shock, the attack proves ineffective, prompting another hasty retreat.