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8 pm. The serious man who returned from work was walking in the corridor of his house with a tense step. There lived a contrasting brother. The identity of the man who seems to be serious is his brother Masato. After graduating from school, he worked diligently and hard to maintain the house left by his parents and his daily life. And, in front of the closed room today, I terrifiedly and softly placed dinner. Younger brother Yuya. Will I be 33 this year? It's been 15 years ago. Since he was 18, he has been living a hikikomori life.