Dekakute Ecchi na Ore no Ane

The protagonist has Segawa Syunsuke growth well below average because of what he is experiencing strong guy being a student. Living separately from the family home, now, along with other guys students lived in university dormitories, but ... These spring break, he got a call from home, and for the first time in 10 years returned home. After some time, waiting time and Syunsuke arrives home, where his memories were always outgrown his three older sisters!