This is a gentle story. A boy with a tough face and a well-built body never got any attention during his three years of middle school and failed his exams, leading him to a boys' school. 'If this continues, I'll never be popular!' 'Why don't you swap lives with someone who is very popular?' A goddess appears before the protagonist, who is lamenting his fate. It turns out that her favorite handsome guy is too popular and is looking for an unpopular man to swap lives with. 'Swapping lives with a popular guy? There must be a catch, right?' 'Not at all. He is handsome, has high specs, and comes from a wealthy family. His family and surroundings are all kind people.' 'Alright, even if there are some inconveniences, it's better than a life where I'll never be popular. If there are any hardships, I'll overcome them with determination and perseverance!' After agreeing to the swap, the protagonist finds himself in a parallel world where men are extremely rare. 'No matter which man in this world I swap lives with, it wouldn't make a difference... Wait, that means...' In this world, every man is popular, and thus, no woman can truly understand the feelings of an unpopular person. 'So, I'm the only one who can understand the feelings of an unpopular person among men?' Realizing this, he begins to think about his relationships with the women around him. This is a story about a man in a harem environment trying to make the women around him happy.