Gyakusatsu Happy End - Ao no Shou

Ao Minato, a young man who killed his father-in-law who repeatedly abused his family and entered a juvenile reformatory. However, the sister who should have protected committed suicide at the end of suffering, and her sister Akane is also missing. Ao, who arrived at a certain shrine, wished for the safety of his sister, which is the only hope left, and swears to God that he will do anything for that ...