User blog comment:DeathGodPrayer/Talk About What You Want!/@comment-162.202.198.72-20130918095456/@comment-1359322-20130918101110

I agree Issei's pervertness is his unique point and his strength too. Also it's because of Issei's pervertness that he can express his feelings openly, he doesn't hide try to hide his desire or anything to himself. also Issei isn't a walking hentai like you say, he also has his serious side, his fight against Sairaorg and Shalba in Volume 11 proves that.