User blog comment:B214/Question and Answers 6/@comment-26293136-20190204223008/@comment-125.167.13.7-20190205210228

When both male and females try to build a harem, they usually become more picky when their first haremmete has amazing quality.

Issei now is a High Class devil and soon to be Ultimate class or even Maou class (if he wishes to). He is also the Hero of Underworld and a really famous public figure. Not to mention, he is rich, influential, powerful, charismatic, brave, kind, and honest.

Who the fuck can top that or reach his level?

I also completely agree with what Omega and Jester said as well