Bed in Rule

Fumine, a new actor, is chosen to play opposite Ed, a popular international actor who is top of his class in terms of both looks and talent. He is filled with anticipation, but Ed, who is rumored to be a gentleman, is in fact a sarcastic fellow! And yet, they decide to live together for the sake of acting...? The rule of living together is "not to fall in love with Ed." But when they kiss and hug like real lovers, sleep in the same bed together and get to know Ed, who stoically strives to be a top actor, they develop feelings of love for each other—and then... Limited love between an international star actor and a fledgling newcomer! (Source: Kadokawa, translated)