High School DXD : Some kind of Disastrous life of upcoming hero

After some heartfelt goodbye with his best friend irina, issei sit in a benchpark and meet with not some random old man and discuss about what it takes to be hero and some perk of being one, follow issei adventure in some AU universe of dxd while issei family not some random family, and some of issei friends who got drag into adventure. slight OOC!issei. issei x harem. still perve this is the same author from fanfiction.net