ecchi comedy sis-bro romance school-life slice-of-life older bro is a serious sis-con, and tries to keep it hidden, he moves away from home to go to college his younger sister is a TOTAL bro-con, and 3 years later chases after her big bro to live with him "so she can go to the same college" https://www.mangaupdates.com/series/nn4s0uv/onii-chan-control