Birdy Cephon used to be a butt-kicking intergalactic Federation investigator who took down bad guys where they stand; Tsutomu Senkawa used to be a normal student with shy tendencies and a penchant for exploring abandoned houses. However, when Birdy accidentally killed Tsutomu while trying to apprehend a famous criminal on Earth, Geega, both of their lives changed forever! Now, while Tsutomu's body is reconstructed in a faraway place, the two must share the same body – Tsutomu controlling it by day, and Birdy taking over when she spots a criminal in need of tough justice. All Tsutomu wants is to live a normal life; can he manage to cope with Birdy's enormous eating habits, intense muscle use, and easily irritable attitude?
Tazusa Sakurano is a 16-year-old girl whose beauty is worth $10 billion -- or at least, that's how she describes herself. She is a skilled figure skater who represents Japan, and is working hard to earn a spot in the Olympics; but unfortunately, at the same time that she fumbled on her triple lux, a ghost possessed her body! His name is Pete Pumps, and he now sees all that Tazusa sees, and feels all that she feels -- especially hard falls. The two have no idea why Tazusa's body was chosen, and how to undo it. If things weren’t complicated enough, the media also hounds Tazusa for being a poor representative for Japanese women in the figure skating arena, and worst of all she has absolutely no privacy! Realizing that there's no way fight against the situation, Tazusa and Pete work together to give their best performance in figure skating.
The concept of sharing a body is evident in both Ginban Kaleidoscope and Birdy DECODE. Everything starts off a bit shaky between the owner of the body and the one who has entered the body; however, little by little they both get along and get through trouble together.
Both lead females have accidently been possessed by a random male because of his death. Hilarity occures in both these anime as they try to learn how to cope with this new issue. Birdy the Mighty Decode takes on a sci-fi nature which is slightly more serious than Ginban Kaleidoscope but both are entertaining in their own way. Check one out if you liked the other.
The lowlife Ranma and the beautiful Rella own a detective agency in Kirin city. He's in it for the money, she's in it for the action. But after a mysterious accident, they are now forced to share... one body?! Now, at the stroke of midnight, only one of the duo gets to use the body, both physically and mentally, causing quite a commotion. With cases to solve and unanswered questions abounding, can the two-in-one-body detective agency solve the greatest mystery of them all: how to return to their former selves?
Birdy the Mighty is about a woman and a boy who share bodies due to an accident. In Cinderella Boy, a man and a woman also end up sharing bodies due to a mysterious accident. Along with this, there is also a lot of crime fighting in both series', although the era and set is slightly different. However if you liked one of these animes there's a very good chance you'l enjoy the other too.
A giant wall looms over Tokyo, shielding the city from a dangerous otherworld called the 'Hell's Gate'. Within the city, things are no less terrifying because Contractors, psychopathic killers with phenomenal powers, have started to appear. These killers are compelled to pay a price every time they use their powers, often in the form of a meaningless or painful task. As their deadly habits rack up a gruesome death toll, Kirihara Misaki and her team from the Foreign Affairs Public Security struggle to solve the cases and bring the Contractors under control. Their task is further confounded by the interference of a masked individual they title Messier Code BK201, a man with abilities that allow him to fight and defeat the Contractors. Who is this BK201? How can the Contractors be stopped permanently? And what does the appearance of the Hell's Gate mean for the people of Tokyo?
This is basically a gut-feeling rec, but Birdy reminds me of an arc-less DtB. There's the same sort of atmosphere, contractors/aliens roaming about unbeknownst to the general populace, the robot-like "dolls"/"marionettes", governments and police getting involved with plot-stuff, and one of those overblown Impending Apocalypse endings that seem to be so popular.
It is the year 2029, and as many rush to embrace the changes that cybernetic technology bring to mankind, the seedier side of humanity is even quicker to take advantage of it. This series follows Public Peace Section 9, a government organization that plays behind the scenes to stop the worst of these criminals. Join Major Motoko Kusanagi and her team as they take you through an incredibly vivid world filled with plots of such depth and intrigue as is seldom seen.
Both Birdy and Ghost in the Shell center on a female police officer with superhuman powers. Also, both series involve political complications and warring government factions that often hamper investigations.
Nono, a clumsy young girl living in the backwater countryside of Mars, dreams of becoming a space pilot. But when Nono witnesses Lal'C, a real space pilot called a Topless, and her brutal fight with one of the invading space monsters, she discovers that it may not be so easy as she's rocketed into orbit alongside Lal'C in the ensuing struggle. With guts and effort her only recourse, Nono reaches for the stars to become a "Nonoriri" and a Topless alongside her Onee-sama, as well as to fight back against hordes of space monsters!
They're both sci-fi series with lots of action, but Diebuster has mechawhereas Birdy has interstellar police forces and terrorists. They both have a rather perky female lead with superhuman powers. The respective animation styles are reminiscent of one another and both use similar colour palettes. If you liked one of them you might want to look inte the other.