Eichi Tenshouin is a prominent character in the Ensemble Stars! series. He is the charismatic and intelligent student council president of Yumenosaki Academy and the leader of the idol unit 'fine.' Despite struggling with poor health, Eichi is respected for his strategic mind and strong leadership skills. His vision for the academy often places him at the center of various storylines, driving change and challenging the status quo. Eichi's complex personality and motivations make him a key figure in the series.