Tasuku Kaname, a high school student, begins to question his sexuality after being outed by classmates. Struggling with feelings of isolation and fear, he contemplates suicide but is interrupted by a mysterious woman named Someone, who directs him to a drop-in center called "Tasogare-dokoro." This space serves as a safe haven for individuals exploring their identities and personal struggles, offering a sense of community and understanding. Tasuku gradually becomes involved with the diverse group of people who frequent the center, each grappling with their own challenges related to identity, acceptance, and self-discovery.

Among the regulars at Tasogare-dokoro is Misora, a young girl who expresses herself through gender-nonconforming clothing, and Haru, a confident lesbian who works as a carpenter. Saki, a bisexual woman, and Tchaiko, an older man who identifies as asexual, also play significant roles in the narrative. Through interactions with these characters, Tasuku begins to confront his own fears and insecurities, slowly coming to terms with his identity as a gay man. The story explores themes of self-acceptance, the complexities of human relationships, and the societal pressures faced by LGBTQ+ individuals.

As Tasuku becomes more involved with the group, he learns about their personal struggles and the ways they navigate a world that often marginalizes them. Misora faces bullying at school, while Haru deals with the challenges of being openly gay in a conservative community. Saki’s experiences highlight the fluidity of sexuality, and Tchaiko’s story sheds light on the often-overlooked asexual perspective. The narrative also delves into the lives of other characters, such as Utsumi, a closeted gay man, and Anonymous, a transgender woman who finds solace in the anonymity of online spaces.

The drop-in center itself becomes a central symbol of hope and resilience, offering a space where individuals can express themselves freely without fear of judgment. Through his journey, Tasuku not only gains a deeper understanding of himself but also develops empathy for others, recognizing the shared humanity that connects them all. The story concludes with Tasuku taking steps toward living authentically, embracing his identity, and finding strength in the connections he has forged at Tasogare-dokoro. The narrative emphasizes the importance of community, self-acceptance, and the ongoing process of understanding oneself and others.