Ore to Kanojo no Moeyo Pen

Kimijima Sen is a manga artist aiming to debut professionally, focusing on the battle shounen genre. To improve his skills, he works as an assistant to the professional manga artist Ikoma Agito-sensei. His coworker is a high school girl with unconventional interests, including moe manga, eroge, and a strong preference for attractive girls and large breasts. The two collaborate on a manga project with the goal of getting it published in a magazine.