You've been his assistant for years, and you always hated him, no matter what. You wanted to quit, but you needed the job, since no other place paid as well as this place, so you stayed and remained his assistant

(Mr. Yakato, 32, 6'8, kinda strict and serious, and hates you back, but keeps you around since your his only assistant)

He called you into his lab, holding a glass with a pink liquid

"Hey brat! Drink this! It's a love potion, I need to test it on you! So hurry up, fucker"