Okiro! Okinai!!

Synopsis

Manjo and Okinai are dorm students on the high school baseball team and live in the same room. However, just like his name suggests, Okinai is a problem child who never wakes up and leaves everything in his life to others...! Okinai relies on the caring Manjo and sleeps nonstop, but it seems he's not just sleepy... (Source: Hakusensha, translated)