Chapter 87

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

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.