[Clue]

Relationship-wise Godou is said to be similar to his grandfather.

Spoiler:

But Grandfather was not only a playboy but there were many women who approached uninvited. Grandma sure had a tough time sweeping those pests away."
To his granddaughter's accusations, the Grandfather smiled and shook his head.
"Though I socialized with all sorts of women in my youth, but my heart was true to my wife after we married."

Spoiler:

"True, personality is different, but the end result of their actions are both 'extremely alike.' I heard that others saw grandfather as a very serious person in his youth, isn't it the same for brother?"
Reflecting on himself, Godou could not argue any more.

Can i take this as a foreshadowing meaning that once he gets married (probably to Erica) the harem will dissolve? or do we have enough proof in the later novels that he will be taking a different path...

I mean Godou is a Campione and he fights alongside the girls, which should strengthen their relationship with him to deeper levels while his grandfather was just a playboy.

Either way i'm really enjoying the read, keep up the great work!!