Ren Mihashi is the main protagonist of the anime and manga series 'Ookiku Furikabutte' (Big Windup!). He is a high school baseball pitcher known for his extreme lack of self-confidence and anxiety, stemming from a troubled middle school experience where he was ostracized by his teammates. Upon joining Nishiura High School’s baseball team, Ren gradually develops his skills and self-esteem with the help of his teammates and especially the catcher, Takaya Abe. His journey is central to the series, focusing on teamwork, growth, and overcoming personal struggles.