Morinaga and Tatsumi have a special "once a week" rule that's meant to guarantee some sweet one-on-one time, no matter how busy they get in the lab! So why is Morinaga still fighting tooth-and-nail for proof that Tatsumi wants to be with him? The Tyrant Falls In Love brings even the most stubborn man to his knees in an all-out war for what should be pure pleasure!