High School DxD Volume 17 Chapter 5.1

“Hello, Euclid.”
“How do you do, Sirzechs-sama. No, my dear brother. I never expected for you to come and see me.”
“……There’s so much I want to say to you. But I want to ask you just one thing. —Why?”
“……My sister……had you. I……had nothing. That’s simply it. ……Though it seems like your other brother isn’t a failure like myself.”
“He was strong, right? He’s a brother whom I can be proud of.”
“I’m sorry I couldn’t be your pride.”
“…………Are you also interested in the other world?”
“……I am not interested in it. I simply wanted to experience “chaos”. Brother, I want to ask you one thing. —What is a “Devil” to you?”
“They're living beings, known as “Devils”. Even though we have different values, we are a species that know both good and evil, just like the humans do.”
“……Brother, you really are naïve.”