User blog comment:B214/Question and Answers 2/@comment-72.211.217.183-20140427014454/@comment-24098614-20140427023329

I don't think three way applies to Issei because if a boy is involved he will running down the hills because you mention this to Issei, and his mind will bring Rias, Akeno, and Kuroka as a Oppai dream without equal of couse he will have eyes closed, and his nose will leaking blood by gallons when he is thinking about this.