"Boku to Misaki Sensei" is a popular Japanese manga and anime series that has gained a significant following worldwide. The title, which translates to "Me and My First Girlfriend" or "My First Girlfriend is Boku's Classmate," revolves around the story of Umetarou Nozaki, a high school student who becomes involved with his classmate, Chiyo Sakura, who confesses her love to him. The series explores themes of first love, friendship, and the complexities of relationships.

The term "Cap 2 Portable" likely refers to a specific episode or chapter within the series, possibly a second episode or chapter that has been made available in a portable format, such as a video or audio file optimized for mobile devices.