Pernicious means being harmful especially in a gradual or subtle way. Dont bother if under 15 i guess ? Quite disturbing.

After the suicide of her mother due to dementia, 14 year old Iris Akari struggles to deal with the stresses and tribulation of daily life. Having an extreme form of dementia in which she can only retain negative memories, she'll be forced to build positive entities within herself to combat the no...