kumagai 

Kumagai is Japanese for "Bear Valley" and is also the name of a cross-dimension killing game.

Person: yo have you heard of Kumagai?
Person 2: the bear valley or the killing game?

kumagai by Monokako March 15, 2021

Kumagai 

Slang for doing weed

Ryan: Julie this isn't what Kumagai means don't put this in the urban dictionary

Kumagai by Monokako March 15, 2021

Kumatai 

An acient game played by men. Like a sacred vow or promise, if you break your kumatai to do/not do said pledge, all witnesses get to kick you in your cash and prizes.

Kieran broke his kumatai in front of 13 people. He hasn't walked straight in days

Kumatai by Alex, June 30, 2008

kumayaih 

A loud person that brings you happiness or peace. It’s Sometimes you will find that person and think you’re different from them, way different. But after you get to know them, you’ll share a lot of interest or gain it. a very kind person she/he is. jokes around a lot and brings life to any party.

Ayy. Man you remind me of a.. “Kumayaih.. Yeah a kuuummmaaayaaihhh.”

kumayaih by pecan mama thomas November 20, 2023

Kumagawa

Correct! Kumagawa was added to Medaka Box in 2016 and he "Saved the Manga"

Hym "Except I'm like Kumagawa in reverse because I created the very concept of Vibe-Coding (didn't coin the phrase though because that isn't what I'd call it because I'm not a fucking dork). So I don't just ERASE concepts from reality but I also CREATE them. But yes. I am pretty sure Kumagawa is based on me. He along with GoblinSlayer were some of the first iterations. And I'd like to take a minute to thank the Mangaka for making my dream come true. YOU are the real heroes! Speaking of which I also STEAL DREAMS. Because AI creating genius wasn't even a dream I had and neither was greatest producer but I am both of those now. 'Tojima wants to be a Kamen Rider' is also another one that just came out. It's a shame that Medaka Box isn't on Crunchyroll. I did look for it. But this has been great. If I hadn't been in pain the entire time it would have been better but whatever."

Kumagawa by Hym Iam November 13, 2025