@pogotun, Well the coach dies of the incurable space coughing up blood disease pretty quickly after their marriage, so Noriko only has to wait a little while before swooping in to have Kazumi for herself.
^Kinda, but no. Sadly she's one of those cases of "Oh, he opened the door for me, no one has been this nice to me in my entire life, I love him no matter what"... You know, harem things-