User blog comment:The Ultimate Pawn/Clarifications on Issei's harem and his peerage/Peerage and Harem Predictions/@comment-43676848-20190901154125/@comment-2208155-20190902032148

Anyway in some tweets with Ishi saying  50 YEARS LATER..

Seems that he will continue adding girls and having children... Some of Issei future children will have the same age than his grandchildren.