Hohzuki Island

A horror manga by Kei Sanbe.

Kokoro Suzuhara is a fourth-grader who, along with his blind 5-year-old sister Yume, have been sent to an island to attend school. The island is more or less deserted; there are only four other students and four teachers. Of course, the adults are hiding something, and are willing to kill to keep the children from finding out.

This manga provides examples of:
 * Abusive Parents - what got the children onto the island, basically.
 * Yukino and her friend, who suffer from emotional neglect and physical abuse, respectively.
 * Adult Fear / High Octane Nightmare Fuel - Young children, forgotten by society, taken to an island to be sexually abused, hunted, and brutally murdered? This Troper won't be sleeping tonight.
 * Big Brother Instinct - Kokoro, caused by his mother telling him to take care of his sister before she abandoned them.
 * Blind Seer - Yume can tell whose walking near her by the sound of their footsteps, and can tell when someone is lying by their voices.
 * Cat Scare - That damn rabbit!
 * Creepy Child / Undead Child - The girl in white. Fortunately, she seems to be benevolent towards the children.
 * Cute and Psycho - Yukino-Sensei, again.
 * Cute Mute - Hatsune. It brings dangerous attention to her multiple times.
 * Dark and Troubled Past: Yukino. Her best friend was beaten by her dad and later imprisoned for being a neglectful mother. Yukino's own parents didn't seem to care about her.
 * Disney Death:
 * Distant Finale:
 * Evil Teacher -Obviously. Though Kuwadate-Sensei seems to revel in it more than the others.
 * Fan Disservice - Yukino-Sensei walking around nude? Nice. Yukino-Sensei walking around nude about to Not so nice.
 * Genki Girl: Yukino's high school friend, who cheerfully refers to her black eye as "new makeup" courtesy of her father. This being seinin, she doesn't stay genki for very long afterward, although it's off-screen.
 * Gosh Hornet: When one of the villains accidentally attacks attacks a wasp's nest thinking that he was disarming a different kind of trap.
 * Hands-Off Parenting: Yukino's parents barely acknowledge her existence, to the point where she's a bit jealous of her friend's abusive father who at least notices that his daughter isn't going to school. At one point she walks around naked declaring that she's off to town.  It's possible that Yukino's parents think they're just leaving their daughter alone like all teenagers want their parents to do.
 * Harmful to Minors - Violence? Sexuality? Check and double-check.
 * Hope Spot: Yay, we reached the port! All we have to do is steal a boat!
 * Infant Immortality - Painfully averted.
 * Killed Off for Real:
 * Lolicon - Kuwadate makes at least two rape attempts on poor Hatsune.
 * Male Gaze - played more for creepiness than fanservice.
 * Mysterious Island
 * Parental Abandonment - ALL OF THE CHILDREN.
 * Kokoro and Yume were basically abandoned by their parents.
 * Shu's mother was a single parent who went off the deep end.
 * Hatsune's mother and her common-law husband disappeared after creating a huge debt.
 * Futoshi's parents died in a car accident, and he was sent to live with his grandmother.
 * Rikiya's parents are in jail.
 * Poor Communication Kills:
 * Properly Paranoid: Shu
 * The Reveal:
 * Social Services Does Not Exist / Department of Child Disservices - take your pick. How else could the events on this island be occurring?
 * Poor Communication Kills:
 * Properly Paranoid: Shu
 * The Reveal:
 * Social Services Does Not Exist / Department of Child Disservices - take your pick. How else could the events on this island be occurring?
 * Social Services Does Not Exist / Department of Child Disservices - take your pick. How else could the events on this island be occurring?