User blog comment:B214/Volume 22 spoilers/@comment-182.185.45.106-20170824131848/@comment-10330822-20190111011512

I don't recall anyone actually saying she gets "a thrill" from it.

I understand that it sounds screwy, so let me try and understand as best as I understand it.

Akeno's mother was an "S", her father is an "M". When it comes to Akeno, it's stated she inherited her mother's "talent" for "S", it never really says she actually an "S". So, she's good at "playing" the "S". When it comes to her work, Akeno occasionally plays the role of an "S", its not out of her own desire to do so. Instead, when she actually has a boy she wants, she finds herself as an "M", which shows that she isn't actually a "S". She doesn't want to dominate, she's just good at it.

So, think of the "S" as "business", the "M" as "pleasure". Only the men she likes get to see her "M", which in this case is Issei.

Besides, the author's examples of her practicing her "S" have been clearly done in the context of her doing so as favors or business, it's never been implied that there was something intimate going on. And to be honest, I'm not entirely sure the author even sees the S&M play as all that intimate in the first place.

Either way, Issei is a pervert and obviously doesn't give a crap, so I don't really see why we should. Now, it's be different if he had a problem with it, but he clearly doesn't. In fact, when Akeno implies she only wants to go "M" for him, it gets him excited.

Also, she is the first person to have his child, so whatever they have going on, it obviously is working for them.