Ijimekko no Okada-kun

Uno was bullied when he was in elementary school. Even after many years, he can't forget it. Suddenly that bully, Okada, shows up at his work as a patient. Uno is surprised to see him, but it doesn't look like Okada recognizes him. Is he still the same as in the past? What will Uno do when Okada asks him to date him? Will Uno be bullied again or will he finally get revenge??