I thought Hana and Noah's moms were Hana and Noah themselves and this was like that Shinozaki-san volume extra where everyone except for Kaede (but including Shinozaki's older brother) became Shinozaki's little sisters during a dream.
Also, I've been thinking that for some time, but Noah has a Sachiko Koshimizu vibe, like claiming/wanting to be the cutest, and the smug cat smile.
Anyway, Hana and Noah's moms are funny. xD
And someone who can relate with Miyako. lol