If you're looking for manga similar to Sankarea, you might like these titles.
Alice is a high school student who faces bullying at school and abuse at home by her uncle. One day, she witnesses her uncle being killed by an assassin called "Arachnid." Thinking that she'll be killed next, Alice has no choice but to fight back. Soon after, she wakes up at Arachnid's house, and he takes her in as his deadly apprentice.
Makoto does not have it easy. He gets bullied in School and has problems with his father due to skipping school. His outlook on life brightens when Kirisaki, a girl in his class, compliments his drawing skills. A while later he sees her getting harassed by the ringleader of his bullies. He decides to intervene, but is cut short by the revelation that she is the ringleader's girlfriend who incited the bullying in the first place. Depressed by his situation Makoto decides to kill himself. He lands in purgatory, neither Heaven nor Hell with the mission to save the lives of six people, whose life will be negatively affected by his suicide... his father, his bullies and Kirisaki.
Wandering the packed tunnels of Shinjuku Station, famous author Yosuke Mikura makes a strange discovery: a ragged hippie who can quote French poetry. Her name is Barbara. He takes her home for a bath and a drink, and before long Barbara has made herself into Mikura's shadow, saving him from egotistical delusions and jealous enemies. But just as Mikura is no saint, Barbara is no guardian angel, and Mikura grows obsessed with discovering her secrets, tangling with thugs, sadists, magical curses and mythical beings - all the while wondering whether he himself is still sane.
Yusuke Saito is a normal high school kid...well, normal enough, though there's six months missing out of his memory. But when he starts to get confronted by people who insist they're from his past, who allege that he did horrible things to them...suddenly Yusuke realizes that those missing six months may be crucial to remember. Otherwise, the skeletons in his closet may just make him a skeleton, too...
A tragic young girl whose mother died giving birth to her? A wicked stepmother and three brothers with whom she shares no blood ties? Murderous intent born from avarice and twisted emotions. Secrets woven with betrayal, terror, deceit, love, death and vengeance? All buried deep within Ayeshah's Forest, shrouded in darkness.
I’m Taishi Aoba, a fifth-grader who's popular and good at everything. As a kind hero figure, I need a tragic heroine by my side. That tragic heroine’s name is Ema Akatsuki. I thought everything would go well if I asked the poor girl out, but things didn't turn out as planned...
A girl who is bullied at school and abused at home goes to a shrine to commit suicide. She’s cursed by a crow with immortality so she decides to get revenge on everyone.
A seemingly amnesiac woman sits mutely before her psychiatrist. Unable, or perhaps unwilling, to speak, the only time she shows any hint of emotion is when she hums a song—and the song becomes the first clue. Pregnant but abandoned by her lover, who boarded a tuna boat to brave turbulent waters far from home, she’d waded into the pitch-black waves one evening to drown herself...because when you feel like you’re stranded at sea all by yourself in the dead of the night, those waves call for you, lulling you to sink into the silence beneath. What we go on to discover is a cursed fate, a ruthless reality, and the dark humor of a world ruled by the indifferent forces of chance. They say you never know what the future holds, but what if you’re told that you only have precisely a fifty-fifty chance of attaining happiness?
Leo, the protagonist who works hard at a part-time job, has a goal of getting a kiss from Angelina Jolie. Suddenly, Nico, his junior high school classmate, comes to him with a target goal of saving 1 million yen and go to the United States ...!?