Genshiken

A new academic year means new members for the lovably misfit Genshiken: The Society for the Study of Modern Visual Culture! Club president Chika Ogiue now has to manage a fresh-faced trio of yaoi fans (one of whom dabbles in cross-dressing), a surly American transfer student with a penchant for obscure anime quotes, and her own rising career as a professional manga artist. Can she actually find time to draw her own vanity project for Comic-Fest?
(Source: Kodansha USA)

Note: Genshiken Nidaime ("Second Generation") is a continuation of the previous series, with chapter numbering starting at 56. In the Japanese edition, the first volume of Nidaime is numbered Volume 10, to continue from the end of the 9-volume Genshiken series. The US edition renumbers the volumes so that the "Second Season" starts with Volume 1.

The deafening whack-whack-whack of a helicopter above campus is the first indication that the balmy tranquility of the Genshiken Club is about to be disturbed. The chopper brings handsome Ranto Hairu: transfer student, scion of a powerful Japanese conglomerate, and newly named chairman of the on-campus club organization committee.
Hairu has strong ideas about the kind of clubs that deserve to survive (earnest, industrious) and the kind that don’t (arty, frivolous), and he’s a big fan of brute force. For Madarame, Kousaka, Ohno, and the others, the idea of losing their cherished club is the ultimate nightmare—but it’s only the first of many.
Fortunately, the Genshiken boys and girls have a few tricks of their own, including a certain sword fighter summoned from ancient times who could prove very handy.

It's about the married life between a newlywed working otaku and his pregnant wife.