Trash Omega

Kanade is a trashy man who has bad manners and no concept of money, but lives by trusting only one face.
One day, he runs into his high school junior, Haruka, but his
ex-girlfriend who holds a grudge against Kanade stabs them both with a knife.
Then, when he opened his eyes, he was in the world of an Omegaverse?!
Kanade, who became an omega, couldn't stand it anymore and ended up seducing Alpha Haruka with a flushed face… ?!