Kowai Onii-san ga Yasashii

Atsumi Takayama is an unlucky and unhappy college student who finds himself burdened with a debt he doesn't even remember incurring. His situation takes a dark turn when he is sold off to two intimidating men named Ei and Kouta, who seem dangerous and frightening at first glance.

Despite his initial fear, Atsumi's obedient and gentle personality begins to endear him to Kouta. As they spend time together, the two gradually warm up to each other, and their relationship starts to resemble that of real lovers, challenging the harsh circumstances that brought them together.