Mondaiteiki Sakuhinshu, Happiness Recommendations
Both are collections of short drama/tragedy stories about teenagers who experience the worst things of life such as drugs, sex, self-harm and bullying. Both mangas deal with depression, desperation, rejection, betrayal and suicide to put an end of all. They show the ugliness of human nature or should I say society?
Confidential Confessions is mainly focused on females while Happiness is accents on both genders. What‘s identical here is that they are young people in their school period.
Both are a collection of several short stories which deal with the same themes, including sexual abuse, suicide, drug use, and pedophilia. Happiness is much more avant garde, with a less realistic approach and more focusing on solely the negative parts of humanity.