User blog comment:B214/High School DxD EX/@comment-25262334-20150729135539/@comment-16281343-20150729143859

I hope at the end there will be a scene where the future Rias will explain to his son the meaning of his name like

"blablablabla it is from the names of the two most important males in my life blablablabal it also means"

So, we will have a clue.