On a day that seemed ordinary, a spaceship crash landed in Tokyo bay, filled to the brim with beautiful aliens that would come to be known as DearS. Since that day, though all of Japan seems to have gone DearS-crazy, one high school boy named Takeya it still not impressed by the phenomenon. But things change for Takeya when he finds a lone DearS girl on the side of the road, who forces herself into his apartment, and his life! Now, he must brave a plethora of complications, misunderstandings, and embarassments, when all he wants to do is be left alone!
All Morioka Kohei wants to be a regular photographer, but all he ever seems to capture on film is ghosts! With 70 percent of his photos inhabited by the undead, Kohei has managed to gain not only a reputation, but also a job at an occult magazine. Things couldn't be more "normal" until he is sent to a obscure castle where he photographs a mysterious girl with a knack at disappearing, thus piquing his interest to return. And thus, Kohei sets out on a journey that takes him into the heart of the occult, on a mission to help the cutest vampire in existence find her long lost mother!
Both DearS and Tsukuyomi Moon Phase are of the "magical girlfriend" genre. While not exactly alike, things both share in common are unique, involving characters, plenty of humor, and a budding romantic relationship between two individuals with conflicting personalities. TMP contains as the main character a young, cute, spoiled vampire girl who comes to be surrounded by a group of mature, caring people who quickly become her most concerned friends. Throughout the series she learns to become more mature through their influence and learns the difference between mature love relationships and "slaves".
When Mikuri Tomokazu fell asleep on his 16th birthday, he expected to dream of girls and happy places -- but instead found himself on a strange battlefield in a desolate world! Now, Mikuri is saddled with the responsibility of saving the both the human and dream worlds from forces that could spell their destruction! But, more importantly, he is also saddled with a legion of adoring voluptuous girls. Questions abound: Who will Mikuri grope next? Will he ever score? And, less importantly, will the world be destroyed?
Both of these are light hearted comedies with cute girls and some kind of aliens of some sort. Also with both of these there a girl that appears and a guy who takes care of her. Overall these both have the same feel to them as well.
In a world where magic is a reality, the young Louise is at the bottom of her class. Dubbed "Zero" by her classmates at Tristein Academy (due to her zero success rate for magic), Louise (along with all first year students) was charged with summoning a familiar; and instead of a cute magical creature, the familiar arrived in the form of... Saito Hiraga, a normal Japanese boy who was abruptly teleported from his own world?! Can both Louise and Saito come to terms with their new and complicated "relationship" and (more importantly) help Saito find a way home?