Description:

Kouichi has looked forward to becoming a high schooler for one reason: to help continue his grandfather's coffee shop. But on the first day of school, a strange girl wearing an eerie mask tells him that she has come to take his life. She tells him that the heart beating within his chest is her own, and that she is an alien invader who has come to take over the world. (Source: MU)

Description:

Kusanagi Kei, a high-school student living with his aunt and uncle, has an encounter with a female alien. This alien is revealed to be a new teacher at his school. Later, he is forced to marry this alien to preserve her secrets. From there, various romantically-inclined problems crop up repeatedly. (Source: ANN) Note: The title was never "- sensei," the Japanese characters phonetically spell "teacher"

Description:

A gigantic flying object suddenly appeared above Tokyo. Just when the country fell into panic, the object shot out a beam of light towards a young man Miyasako Kyouichi. The beam was not an attack; instead what appeared out of the smoke was Miyasako's ex-girlfriend Tendou Ashita!

Description:

Takasu Ryuuji has learned the hard way that appearances can be deceiving. For despite his inwardly sweet personality, his unintentionally sharp gaze and aggressive features give him the air of a delinquent thug, putting his chances at making new friends, let alone a girlfriend, next to zero. It's Ryuuji's first day of his second year of high school and it seems as if things are looking up. He gets to sit in between his only friend, Yuusaku, and more importantly, the girl he's secretly crushing on, Kushieda Minori. But just when he thinks the stars are aligned in his favor, he unwittingly crosses the most feared girl in school, Aisaka Taiga, making her into his arch enemy. To top it off, Taiga has moved in right next door to Ryuuji and happens to be Minori's best friend! Can this school year possibly get any worse?! (Source: Seven Seas Entertainment)

Description:

Kou Kitamura is a fifth grader whose family runs a sporting goods store. One of the regular customers of his family's store is the Tsukishima Batting Center, and so he gets to know the four daughters of the Tsukishima family (Ichiyo, Wakaba, Aoba, and Momiji) very well. Since Kou has spent so much time practicing in their batting cages, he has become a genius hitter, but has no knowledge of any other aspect of baseball. This is in contrast to Aoba, who, despite being a year younger, is an adept pitcher and hitter. Wakaba is a classmate of Kou's, and she seems fully intent on marrying him when she grows up. All seems idyllic in their world, until tragedy strikes. The story then skips ahead to four years later, as Kou has continued the training he began four years ago, but has not played in a baseball game since. As he finally begins playing again, it remains to be seen whether or not he will live up to the expectations of those who know the true talent he has been hiding all this time. (Source: ANN)