"I want to do more than hug you..."
When they were young, Yuuga and Ruki became step-brothers due to their parents' remarriage. However, when their parents are going to be divorced, they were to become strangers again—at least that's how it's supposed to be.
When Yuuga enters his first year of work, Ruki who's now a college student confesses to him, "Make me your lover"...?

Forbidden step-brothers love story of ore-sama younger brother × natural airhead older brother!