User blog comment:B214/High School DxD EX/@comment-68.53.129.54-20170413035039/@comment-1359322-20170414045328

It's to spend 4 hours with a wife. Ise will get 10,000,000 wives in the future and 100,000,000 kids and 1,000,000,000 grandchildren and so on by 300 years and his schedule would end up being too big to cover even for the remainder of his life.