@ Zero - Did you watch Mayo Chiki? The voice for the Oujo sama reminds me of Tatenashi.
Side note -
Karon's mom - Tsundere who dotes on her kid.
Ichika's "mom"/Chifuyu - Kuudere with slight bro-con
Kyuukai's mom/Tabane - Genki girl with a mad scientist streak.
Irish's mom/Maya - Cute clumsy girl who tries to get to know her son more.
Pretty odd family, huh? I can't wait till they work together to stage an intervention after all the things their kids pull, it'll be gruesome
@ Meister - When is Vandam appearing? I'd love to read it