User blog comment:B214/Talk About What You Want! 3/@comment-213.120.234.138-20150830131130

I was checking Issei's profile recently and saw that in the relatives section his parents are still un-named, plus he has an un-named grandfather (deceased) and grandmother. How come we still don't know the names of his parents?! We know the name of Rias' mother, Xenovia's mother, Irina's father, Akeno's mother and father and even Rossweisse's grandmother. And yet we still don't know anything about Issei's parents or grandparents except the parents jobs and what was learned in volume 20. What gives?