Official English: Renta!

From Renta!:

After hearing all his classmates brag about doing it over the summer, Yohta lies and claims he did, too. However, his childhood friend, Wataru, sees right through him. Wataru invites Yohta to "study" together so they'd be ready for when they finally scored. But, why do these lessons seem like they're preparing him for a very different type of experience...!? This eight-story volume also includes romances between rival deliverymen, a hot college guy and his neighbor, as well as a famous actor and his manager!