User blog comment:B214/Question & Answers 5/@comment-4547267-20151128181050/@comment-26345952-20151128184546

Well as far as I know, he's only a pervert not a molester. Issei at his beginnings was only a second rate perv and never went forward towards his relationship with any of the girls until Vol. 10, and even after Vol. 10 he was a perv but much calmer and more focused on whats ahead of him.

If anything the only thing close to molesting someone was in one those specials or the OVAs of the first season, and even so it was entierly his fault. Except for using Dress-Break on Rias.

other than that nothing close to it.