is this only 1 chapter? need more.
It's part of a series. This is just 1 chapter out of numerous others across the 4 books mentioned. They are all on mangago just search for them.
Do you know which chapter/volume the legit one is in? Cuz even on the Original page for this manga its the same as this april fools one.
I'm not the specific chapter of which volume but just read the series in the above order and you will definitely come across it.
Thanks!
The legit chapter of this (with the crossover) can be found in one of the koro series extras the series is: 1.Otokogokoro 2. Koibitogokoro 3. Koigokoro 4. Tokimekigokoro