I absolutely adore Saitou-san. Its the suburban housewife dorama to end all suburban housewife doramas because at the heart of it, its about Mano-san, played wonderfully by Mimura. Season 2 seems to be basically a rehash of season one and if one dorama this season got its casting wrong besides Hanzawa Naoki, Saitou-san 2 with Kiritani Mirei (Arakawa Under the Bridge) as Saitou-san's future friend.
What's with Kiritani Mirei besides the fact that she looks like she is just skin and bones? She's a 23 year old actress who looks like a high schooler and plays the mother of a 10 year old. As bframe said, absolutely ridiculous. The husband must be guilty of statutory rape unless she's the stepmom. Its worse than casting Ueto Aya as a housewife who's been popping too many happy pills. Right from the get go, Saitou-san 2 has lost me. They tried to cover it up with many characters and herself proclaiming how young she is but is she playing a 30 year old who looks 18 at most?
Skipped towards the end and I was so happy when Mano-san showed up that I watched the scene twice. Those two have a magical chemistry between them and that's something Kiritani Mirei will not have with Mizuki Arisa. You're better of rewatching the first season. Why rehash the same story with a actress who is much worse?