Sanada Souji, a senior in high school, is intelligent and athletic. He is also good-natured and never hesitates to lend a helping hand to those in need. However, his family is yakuza. Because of this, he was shunned by everyone around him. Will this loneliness last forever? As anxiety fills his mind, he receives a mysterious phone call, and things take an unexpected turn. This is the story of a young man who longs to be a hero, facing down a mysterious organization. (Source: Kodansha, translated)