"When you lose something, there is something that you remember." Hinata Wahei, a 28-year-old professional house-building planner, with the sole ambition to start his new single lifestyle, was suddenly forced to live together with three sisters from his father's second marriage. The unforeseen co-existence is filled to the brim with trouble, as Wahei adheres to a self-sufficient, no-family-sentimentalisms personal…