ICYMI: Back in Ch 259 of My Hero Academia, Chainsaw Man protagonist made a small cameo!
In ch 259, we see heroes like Fat Gum and Mt. Lady alongside Chainsaw Man’s Denji. You can see him clearly on the left of the image behind Fat Gum.
Does this mean that Chainsaw Man and My Hero Academia exist in the same universe? Probably not, but it’s still a pleasant surprise that Chainsaw Man was featured in another popular shonen manga.