The term 'haha futari hentai manga' is quite cryptic. Maybe it's a manga featuring a couple in some sort of funny or adult-oriented situation, but without additional details, it's difficult to provide a precise understanding.
It might be a romantic - comedy genre. The 'futari' (two people) aspect often lends itself well to comedic situations in love stories. And since it's a love story with a 'step up' which could imply some sort of development, it could have elements of humor along with the romance. For example, the two characters might get into funny situations as they try to move their relationship forward.
Since I don't know the exact details of 'futari ecchi step up love story', I can only make some general assumptions. In a love story, there is often an initial attraction between the characters. In this case, perhaps the 'futari' (two people) start with a certain level of connection, and as the story progresses, they 'step up' in terms of their emotional commitment. There could be plot twists, like misunderstandings or external factors trying to pull them apart, but ultimately their love story unfolds in a unique way that the title implies.
These cartoons often emphasized the superiority of the Soviet system and depicted the capitalist West as corrupt and aggressive. They focused on themes like peace, socialism, and the protection of the people.
The connection between Spike X and Shining Comic could range from being in the same genre to having a creator in common. Without clear information, it's difficult to determine exactly.
Comic Christmas cards usually have funny or cute illustrations, bright colors, and sometimes witty messages to bring joy and laughter during the holiday season.