The Class 1-A Party!

BKDK Omega verse
Deku Omega
Kacchan Alfa
I worked hard on this.
Please read.

So I'm mixing it up a little bit. Sens Kacchan and Deku were childhood friends Kacchans the only one that knows Deku is an Omega. One day Kacchan uses the fact that Deku is an Omega to get what he wants.