Chapter 87

"Monster Nature" (怪人性, Kaijinsei) is the 87th chapter of the One-Punch Man manga series.

Summary
A new group agrees with the monster outbreak and attempts to capture a citizen for disagreeing with their ideology, but have the misfortune of bumping into Garou, who knocks them out with a flick before heading to a nearby restaurant and eating everything on the menu. Saitama is having lunch at the same restaurant, but is not able to pay because he lost his wallet. Coincidentally, Fubuki arrives and begins talking about the Hero Hunter while also once again trying to get him into her hero faction. He misleads Fubuki into eating the fries as Garou dashes out and everyone screams dine and dasher. Saitama then takes the opportunity to go out to "catch" the dine and dasher and push the bill onto Fubuki. Later, Garou scares some boys who were bullying Tareo. Tareo thanks Garou for his heroism, which disgusts Garou. Soon enough Saitama catches up to Garou and lets Garou off with a warning. This severely angers Garou, thinking that heroes have starting to take pity on him. He resolves to carrying out his task by bring back Saitama's head, but Saitama accidentally punches Garou, knocking him out. Some time later, Garou wakes up and asks Tareo who the hero was. Immediately after, Bug God and Royal Ripper confront Garou for not seeming like a monster. Royal Ripper approaches Tareo, to which Garou tells him to back off.

Chapter Notes

 * Back in the 80's there was a Japanese idol named Sakai Noriko who was known among other things for changing phrases in cutesy nonsensical ways. One of these was itadaki-mammoth instead of itadakimasu. Saying it today would be sort of like a dad joke. The real joke here is Saitama independently making the same sort of word play with gochisosama, which is what Japanese people say at the end of a meal.
 * Murata mentioned on that the dine and dash place Togas (トガス) is based on Cafe Restaurant Gusto (Cafe レストラン ガスト), a Japanese fast food chain that Murata enjoys eating at. Murata just rearranged Gusto (ガスト) into Togas (トガス).