Kōta Hasegawa is the main protagonist in the anime series 'Sanrio Danshi' (Sanrio Boys). He is a high school student who secretly loves Sanrio characters, especially Pompompurin. Kōta initially hides his passion due to fear of being judged but eventually finds friendship and acceptance among other boys who share his interests. His journey in the series is about embracing his true self, building confidence, and highlighting the importance of friendship and self-acceptance through his love for Sanrio.