I'd argue Jeanne is the one person that Jalter finds even worse then Salter to 'lose' to when it comes to lunch dates with Gudako.
If you haven't had lunch yet, would you like to join us?Um, I'm having lunch with master now. For her to refuse lunch with me...!Today I already have plans with someone else! Please invite me next time!Sorry Alter-Chan!Don't tell me it was that woman...