This is non-canon arc as it doesn't exists in novel.
But people in the comments said it is following novel
I wanted to show you the site where I read the novel so I could pointed out where the novel ending but alas the site was already long gone. The novel ended in the part where gyuha said 'are you ready for second child.' So first half of s3 is from novel but the amnesia arc isn't. (But just in case there's continuation after the ending I read then my bad. But seeing how messed up directions of this arc I doubted it).
Okayyy （￣へ￣）
Hey novel reader tell me when does this fuckass arc ends ??? Do the mc for divorce cause I will