Blue Flag is a manga series that revolves around the lives of four high school students, including Taichi Ichinose, who becomes the target of bullying due to his timid nature. The story explores the dynamics of friendship, love, and self-acceptance amidst the challenges of bullying. As the characters navigate their way through the complexities of adolescence, Blue Flag delves into the emotional turmoil caused by bullying and the resilience required to overcome it. This manga offers a heartfelt portrayal of the struggles faced by victims of bullying and the importance of finding strength within oneself.