Good Kitty

Okuda asks Karma to drink an unknown concoction after science class, and without a second's thought, the red head did as he was told, pressing the vial against his lips and swallowing the unknown substance

At first nothing happened, and after waiting for five more minutes Okuda deemed her experiment a failure and Karma continued on with his day

it wasn't until during lunch however when he runs into his rival Asano Gakushū, did the effects finally kick in