My wife seems very suspicious!! I don't understand why she would marry a guy like me!? Why would a beautiful, smart, and thoughtful woman like Yoshino be with the very ordinary Naotsugu!! There's no marriage blues here, just a suspicious case of marriage gray!!

Sora Mishima is a sunny and kind-hearted high school girl who would like to have a boyfriend. One day, she has a rather sexy dream and comes to school to find a transfer student, Akane Kamidate, has arrived in her class. He looks like a gloomy, dark-skinned guy, but for some reason, everyone in the class seems to be attracted to him...? (Source: Shonen Jump Plus, translated)

A vampire cannot enter without being invited.

When I came to, I realized I was standing in the middle of a vast, snowy plain I knew nothing of. I didn't know how I got there. And to add to that, I couldn't remember anything, not even my name. I stood there, dumbfounded at my absurd situation. But then, as if to spite me further, a gigantic monster suddenly appeared, an insect-like creature that began to bear down on me. I tried desperately to run, but it cornered me into a hopeless situation. It was then that the girl appeared. Her name was Kuon. It was this beautiful girl, who bore an animal's ears and tail, that saved my life. (Source: Anime News Network)

A side-story providing an alternative retelling of the events of the anime as well as original stories.

An anthology comic of Umineko no Naku Koro ni by various mangaka.

A comics anthology about girls and breasts from one of D3 Publisher’s games, titled Omega Labyrinth.

Three years after monster-infested dungeons start appearing on Earth due to an American experiment gone awry, anonymous researcher Keigo Yoshimara strikes gold when he accidentally kills a creature. This earns him a magical “D-Card” and a mysterious skill that allows him to see RPG-style stats. Deciding to quit his job and go into dungeon diving, Keigo seeks the assistance of his highly knowledgeable colleague, Azusa Miyoshi, to help him conquer the dungeon exploration market and make millions. But it's a race to obtain all the treasure and magic he can before the masses of government agencies and like-minded explorers take it first. No one said getting rich would be easy (Source: J-Novel Club)

Elite ninja Uchiha Sasuke travels the land with his teammates, searching for his brother Itachi. Pillow fights, video games, Christmas parties… There’s nothing this ninja won’t do to avenge his clan! (Source: VIZ Media) *Note: Includes 3 sets of bonus pages, where each set is considered a chapter; each volume contains a set.*

There's nothing harder than starting fresh at a new high school... except maybe having to hide your secret identity as a cat-burglar! Asuka is just your average, ordinary girl, except for her tendency to steal from evil-doers as a midnight vigilante.

Aria is a former high school girl who has been reborn as an ordinary aristocratic daughter. She is matched for an arranged marriage with Eugene, a prince who is rumored to be eccentric. He suddenly told her that he is the reincarnation of Nobunaga Oda! She realized that this is the reason why he couldn't find a suitable marriage partner. Eugene is intrigued by her acceptance of his crazy story... "I can't let him know that I also have a previous life!" The days of intense courtship by the strongest prince who can win a kingdom is about to begin! (Source: B's Log Comics, translated)