Ayumu was murdered by a serial killer – at least, he was. For after the mysterious Eucliwood Hellscythe revives him, he changes from a human to a zombie, much to his dismay. Now, in addition to being unable to die, the boy must see to the whims of his supernatural, silent companion – but things continue to get worse from there. As once Ayumu accidentally steals a magical girl named Haruna's powers, he is tasked with the embarrassing, obnoxious task of being a magical girl – err, boy – in her stead! Then with the addition of a hostile vampire ninja to his household, can Ayumu manage to maintain his new home life, fight against attacking monsters, and track down the person who killed him all while attempting to keep what little dignity he has left in tact?
With Oshino gone and school out for summer, Araragi heads into the break hoping to spend his time relaxing, working on his classwork with Hanekawa, hanging out with his girlfriend Senjogahara, and maybe even finding a little time to molest Hachikuji as he wanders the streets. But when his sisters get tangled up in investigating a ring of curses circulating their middle school, the boy finds himself once again involved with strange characters and unexplained oddities. With only his vampiric mistress Shinobu for help, will Koyomi Araragi be able to solve the strange mystery uncovered by his "Fire Sisters"?
These two have a lot of similarities. Both involve a seemingly average joe who's been turned immortal (or undead), and both protagonists have accerated healing . Their powers are also similarly linked and originated from very harmless yet powerful looking girls (Shinobu and Necromancer). Both anime are also harems...the list really goes on and on.
Sasami is a lazy hikikomori who'd rather be playing video games and sleeping than being a productive member of society, especially with a doting brother who waits on her hand and foot. But there's more than Sasami and her family than meet the eye – in reality, they are connected to the goddess Amaterasu and mysterious 'alterations' that occasionally change and threaten the world. With the help of three sisters, Sasami slowly tackles day to day challenges and puts a stop to alterations – and monsters – when they appear.
Both series feature a rather extensive mostly female cast and play parodies and otaku culture as straight parts of their worlds. The humour and fan service is quite similar at times. Sasami is rather artistically made so in the first light it might look different however it does have quite a couple of overlapping content a quarter of the way in.
Sasami is basically kore wa in a shinto setting without the harem setting sharing a lot of humour while still retaining a plot.
In a bizarre fantasy world, students known as meisters are trained at the illustrious Shinigami Weapon Meister University; but the tools they wield are no ordinary weapons! Each meister is paired with a human-like being who can transform into a weapon at will; and after defeating a pre-kishin - a human whose soul has darkened - the weapon eats the soul within it. A meister's ultimate goal is to collect ninety-nine pre-kishin souls and one of a witch so that his or her partner will become an all-powerful Death Scythe. Maka and her partner Soul Eater; Assassin Black Star and his partner Demon Blade Tsubaki; and Shinigami's son Death the Kid and his partners the Demon Twin Pistol Thompson Sisters each vie for their ultimate goal, but plenty of challenges and adventures lie in their way!
Michiru has an unusual ability: she can see a dark ring around a person's neck that signifies their time to die. However, she suppressed her powers once she "saw" the deaths of her parents – until now. After accidentally seeing rings around the necks of two boys in her school, it seems that Michiru's powers are back for good. The two are zombies who are working for the secret loan office known as Zombie-Loan, and they need Michiru's help to find other zombies – those with dark black rings around their necks. Though Michiru initially refuses, due to a series of events it seems she has no choice but to comply...
Both of these animes take a rather "human-looking" take on zombies. Both deal with young protagonists that are obligated to fight monsters because they (the protagonist) are a zombie. Both series have humor, ecchi, and drama galore.