guess what, the other couple didn't want to be the top couple, so they got E on purpose, cause they didn't want to change partner. Just my worst conclusion tho.
i would love if the story will become like this :" rebellious hero take over royal capital, wazu to the rescue {with his harem}, kill the scumbag hero, and jealous revenge by f*cking the harem in front of childhood friend"
just ignore those madafaka who can only complain without doing anything, thanks for your hard work ! (consider them shit as the pink haired btch in this story)