Eight Women One Man

Shinichirou would rather spend his life playing games on the internet, but sadly he's an heir to a company. His grandfather deems his current life-style unfit for an heir, so he throws him into a house with eight young and beautiful girls. What's more, within one year he'll have to choose one of them as his bride. What will happen to him now?
Manga Published in a Seinen magazine. Please do not edit Demographic to Shounen.