Toumei Ningen no Hone

Aya Kinomiya appears to come from a normal family with a caring mother, father, and older brother, but this is misleading. Her father abuses her mother and is harsh with them over minor issues, while her brother ignores the situation and focuses on his own pleasures. Aya's mother endures the abuse to protect her children, and both she and Aya live in fear. Aya longs for the stability of other families. After witnessing a violent argument between her parents, she suffers intense stress and gains the ability to become invisible. Initially, she enjoys this power, but she eventually makes a decision that could haunt her for the rest of her life.