User blog comment:DeathGodPrayer/Talk About What You Want!/@comment-24098614-20131223075126/@comment-9339850-20131223080413

Personally, i dont see Issei living forever. I envision him dying in a huge battle of some sort; But this is all off-screen of sorts and WAY after the formal DxD story is finished. Maybe if some sort of side/spin-off story is made, it could make nods to Issei if he has in fact died in the way i stated, but again thats my personal opinion