Kiira seems like an ordinary young girl, who likes to talk with her friends and to dress up. Her ultimate goal is to become the world’s best baker, but what differentiates her from others is that she is a vampire. She has never told anyone her secret, including her childhood friend Tetsu, whom she played with everyday and liked as a child. After her parents died when Kiira was only 12-years-old, she had to go live with her relatives and lost contact with Tetsu. Now, 8 years later, Tetsu appears at the bakery where Kiira is working part-time. Kiira is ecstatic to see her first love again. Soon, they are dating and Kiira dreams of having a family with Tetsu. Kiira also becomes filled with worries because she is vampire.
On July 27th, university student Aoi Hinata (Miwa) has an accident. When she wakes up, Aoi Hinata finds herself in a classroom from one week before the accident. At that time, her childhood friend Riku Hasegawa (Kentaro Sakaguchi) tells her “I will tell you a secret. I can turn back time.” Aoi Hinata and Riku Hasegawa like each other, but never expressed their feelings. They share their feelings for each other and go back to one year earlier. They spend their time happily as girlfriend and boyfriend, but there is a big secret behind the time slip. In addition, July 27 is approaching.
High school student Ichigo Kurosaki lives an ordinary life, besides being able to see ghosts and the blurry memories of his mother death under strange circumstances when he was a kid. His peaceful world suddenly breaks as he meets Rukia Kuchiki, a God of Death.
Co-pilot Kazuhiro (Tanabe Seiichi) is up for promotion, but before he can get his captain’s wings he has to get through a flight evaluation, and things aren’t exactly going his way. He just crashed and burned on a simulated flight test, and his friendly examiner has been replaced with the tough-as-nails Harada (Tokito Saburo). On the same plane is cabin attendant Etsuko (Ayase Haruka) who’s flying her first international flight and trying hard to not mess up. Elsewhere in the Happy Flight universe, staff are bustling back and forth with various problems and gripes – all to make this ordinary yet fateful flight a safe and happy one.
To the average person, psychic abilities might seem a blessing; for Kusuo Saiki, however, this couldn’t be further from the truth. Gifted with a wide assortment of supernatural abilities ranging from telepathy to x-ray vision, he finds this so-called blessing to be nothing but a curse. As all the inconveniences his powers cause constantly pile up, all Kusuo aims for is an ordinary, hassle-free life—a life where ignorance is bliss. Unfortunately, the life of a psychic is far from quiet. Though Kusuo tries to stay out of the spotlight by keeping his powers a secret from his classmates, he ends up inadvertently attracting the attention of many odd characters, such as the empty-headed Riki Nendou and the delusional Shun Kaidou. Forced to deal with the craziness of the people around him, Kusuo comes to learn that the ordinary life he has been striving for is a lot more difficult to achieve than expected.