[Kafriel]

Spoiler for Season finale:

Just watched the two last episodes, that was definitely quite an intricate plot...too bad the fight was as dull as the story was interesting. Overall it was a very good season, much better than the first one, and if I liked something about the ending, it was definitely Rikuo becoming the third, unlike a certain "tenth" boss who's been dodging responsibility for 366 chapters now. Off to read the manga now

I'm curious what's Rikou's mother's thoughts on all this?

Curiosity seconded, she can't have possibly been left in the dark about it, unless Rihan met her many years after Yamabuki Otome disappeared, but even so...