Best Remedy for the North Wind / Gut Gegen Nordwind

The love story of Emmy and Leo is a touching, funny, witty, and crazily exciting internet romance in letters. Emma, wanting to unsubscribe from an annoying mailing list, makes a mistake and sends a letter to a private address. Thus... begins the correspondence between two strangers.
We all communicate online one way or another, and very often our interlocutors are invisible people we have never met in person. In such communication, the ease with which one can respond to a person who does not see you and whom you do not see is appealing.
The relationship of the characters develops in virtual space, but that’s not important at all, as their experiences are real. Can correspondence lead to something serious and genuine? Or is it just a "remedy for the north wind"?
The book is in German.